Mandarin tree named ‘FairchildLS’

Abstract

‘FairchildLS’ is a mid-season maturing diploid mandarin that combines medium-large sized fruit of excellent quality and production, with low seed content even in mixed plantings. It would likely be successful in the mid to late-season marketing window that currently has very few low seeded cultivars.

Description

Latin name of the genus and species: The mandarin cultivar of this invention is botanically identified as Citrus reticulata.

Variety denomination: The variety denomination is ‘FairchildLS’.

BACKGROUND OF THE INVENTION

This invention relates to a new and distinctive mandarin cultivar designated ‘FairchildLS’, which was developed at Riverside, Calif. and derived from an irradiated bud of ‘Fairchild’ mandarin. ‘Fairchild’ mandarin was produced by J. R. Furr in Indio, Calif. from a conventional hybridization of 2n Clementine ‘Algerian’ mandarin×2n ‘Orlando’ tangelo (itself a hybrid of ‘Duncan’ grapefruitבDancy’ mandarin produced in Florida). ‘Fairchild’ was released in 1964.

Irradiation of budwood of ‘Fairchild’ mandarin, taken from registered trees in Lindcove, Calif., was accomplished in June, 1997 at Riverside using 50 Gray units of gamma irradiation from a Cobalt-60 irradiation source. Buds from this irradiation were propagated onto various rootstocks in the greenhouse at Riverside where they were grown to field-plantable-sized trees. These trees were planted in June 1998 at Riverside. Fruit production and evaluation on these trees began in 2001. One selection from this irradiated population (propagated on Carrizo citrange rootstock) distinguished itself from the others in having very low seed counts in comparison to the original ‘Fairchild’ cultivar, as well as having the excellent fruit quality and normal fruit production characteristics of the ‘Fairchild’ parent (see, FIGS. 1 and 2). This selection, later designated ‘FairchildLS’, was known throughout experimental evaluation as ‘Fairchild’ IR2 (for ‘Fairchild’ IRradiated selection #2). After two seasons of fruiting this selection, ‘Fairchild IR2’, was selected for further trials and in June 2002, buds were taken from this selection and propagated onto Carrizo and C35 citrange rootstocks at Riverside. In April 2003 budwood from this selection was sent to Riverside, Calif. for evaluation of disease status and elimination of viruses and other pathogens, as needed. Twenty trees, propagated from budwood taken from the “mother” tree selection were planted at Riverside in June 2003. Fruit production on these twenty trees commenced in 2006. In June 2005 two trees of ‘FairchildLS’, which had been produced from budwood tested and certified as tristeza-free, were sent to Lindcove, Calif. where they were planted in the citrus breeding block. Further propagations from the Riverside budwood source were made at Lindcove in the summer of 2003. In June 2004, twelve trees from this propagation were planted in Irvine, Calif. and two trees in Santa Paula, Calif. An additional forty-eight trees from this same 2003 propagation were planted in 2005 at four trial sites: Lindcove, Arvin, Oasis and Woodlake. All trials were propagated equally on Carrizo and C35 citrange rootstocks. Fruit production of these propagated trees commenced in 2006 (a few trees at two sites) and 2007 (most trees at most sites). The properties of ‘FairchildLS’ were found to be true to type and transmissible by asexual reproduction in comparing these plantings with the original ‘FairchildLS’ selection.

BRIEF SUMMARY OF THE INVENTION

‘FairchildLS’ is a mid-season maturing diploid mandarin that combines medium-large sized fruit of excellent quality and production, with low seed content even in mixed plantings. It would likely be successful in the mid to late-season marketing window that currently has very few low seeded cultivars.

BRIEF DESCRIPTION OF THE DRAWINGS

The Figures depict various characteristics of ‘FairchildLS’.

FIG. 1 shows fruit of ‘FairchildLS’ taken at Riverside in February 2009.

FIG. 2 shows a comparison of seed content of ‘FairchildLS’ (left) and standard ‘Fairchild’ (right) mandarins under cross-pollinated conditions.

FIG. 3 shows an eleven-year-old “mother” tree of ‘FairchildLS’ on Carrizo citrange rootstock.

FIG. 4 shows a five-year-old ‘FairchildLS’ tree on Carrizo citrange rootstock at Riverside, Calif.

FIG. 5 shows the bud-union of an eleven-year-old ‘FairchildLS’ on Carrizo citrange rootstock.

FIG. 6 shows fruit clusters of ‘FairchildLS’ taken at Riverside in February 2009.

FIG. 7 shows leaves of ‘FairchildLS’.

FIG. 8 shows open and closed flowers of the ‘FairchildLS’ mandarin cultivar.

DETAILED DESCRIPTION OF THE INVENTION

‘FairchildLS’ is a mandarin selection developed at Riverside, Calif. from an irradiated bud of the diploid mandarin cultivar ‘Fairchild’, which is a mid-season maturing variety. Evaluation of ‘FairchildLS’ began on the original tree at Riverside in 2001 and has continued annually until the present. Tree size, growth, as well as fruit production and fruit quality characteristics, have been compared in these evaluations to ‘Fairchild’ mandarin from the same field block. Three, four and five-year-old ‘FairchildLS’ trees in trials at Riverside, Irvine, Arvin, Lindcove, Oasis and Woodlake have also been evaluated from two to four years of fruiting (see Tables 1 and 2).

‘FairchildLS’ distinguishes itself by being low seeded (2.4 seeds/fruit) in all situations of cross-pollination, differing from ‘Fairchild’, which will have up to 15-25 seeds/fruit in cross-pollinated situations. In Riverside, Calif. ‘FairchildLS’ matures in winter, typically early January, and holds its fruit quality characteristics through late March. Fruit size is moderately large (64 mm in diameter) averaging 110 grams per fruit. Fruit are deeply oblate in shape with a deep orange rind color and a moderately smooth rind texture. Flesh color is deep orange and finely textured, and the fruit are moderately easy to peel. Fruit are juicy, with a rich, sweet flavor when mature. Tree growth habit is rounded, producing a dense, compact tree crown with excellent production commencing in the third year after planting. ‘FairchildLS’, like its parent ‘Fairchild’, may need a pollinizer for best production. ‘FairchildLS’ is well adapted to growing in all California climate zones normally associated with citrus, including hot desert areas (where maturity and marketing occur in November-December), which is a rare and distinct advantage for a mandarin. Alternate bearing does exist, but can be controlled with appropriate cultural practices.

‘FairchildLS’ mandarin can be grown according to accepted cultural practices for most mandarin varieties, including planting densities of 180-300 trees per acre, normal fertilization and pest control practices, and the use of standard rootstocks for mandarins. Pruning is not normally necessary since the normal growth habit of the tree results in a dense, compact crown. However, selective interior pruning may enhance production and health of the tree if applied after the second year of full fruit production and regularly thereafter. Other rootstocks adapted to more marginal growing conditions of salinity, high pH or very heavy soils, including the lemon types C. macrophylla, Volkameriana, and rough lemon, may be useful in those conditions but overall fruit quality would likely be affected negatively. Sour orange or mandarin type rootstocks such as Cleopatra might be more suitable in these marginal conditions since fruit quality would not be affected to the extent the lemon-type rootstocks impart.

Comparison with Existing Mandarins

Mid to late season maturing mandarin cultivars in production include ‘Fairchild’ mandarin (the original cultivar from which ‘FairchildLS’ was derived), ‘Murcott’ tangor, ‘Fortune’ mandarin, ‘Ortanique’ tangor, ‘Page’ mandarin ‘Temple’ tangor, as well as late-maturing Clementina selections including ‘Hernandina’ and ‘Nour’, ‘Dancy’ mandarin and ‘Minneola’ tangelo. All of these cultivars will be seedy if grown in the presence of a pollenizer. Some, including the Clementina selections, ‘Fortune’, ‘Ortanique’ and ‘Page’ mandarins will have few seeds if no pollinizer is present. Recently released mid and mid-late season cultivars that are very low-seeded include ‘Tango’ mandarin, ‘Gold Nugget’, ‘TDE2’ mandarin hybrid (Shasta Gold®) ‘TDE3’ mandarin hybrid (Tahoe Gold®), and ‘TDE4’ mandarin hybrid (Yosemite Gold®) and ‘DaisySL’ mandarin. ‘FairchildLS’ differs from these cultivars in being slightly earlier maturing and better adapted to hot desert climates than all but ‘DaisySL’. Trees of ‘FairchildLS’ tend to be smaller than all the other varieties except ‘DaisySL’. Additional differences (summarized in Table 6) distinguish it from each of these cultivars.

‘FairchildLS’ mandarin exhibits low seed numbers (2.4 seeds per fruit) in all fruit under all conditions of cross-pollination. Additionally, preliminary evaluations indicate that pollen from ‘FairchildLS’ has reduced germination rates in culture (˜25%) and is therefore likely to reduce the tendency to cause seeds in other mandarins, causing few seeds in selected Clementine mandarin and ‘W. Murcott’ mandarin cultivars when hand pollinated onto those selections. A comparison of ‘FairchildLS’ with other low-seeded late-season mandarins is provided in Table 6 below. ‘FairchildLS’ is distinctive and superior in having a very wide climatic growing area, somewhat less alternate bearing, and fruit appearance that may be preferred in some markets.

The Royal Horticultural Society (R.H.S.) color numbering system is used herein for the color description of the rind, seed, bark, leaf, flower, flesh color and other interest of the ‘FairchildLS’ mandarin cultivar.

Trees, Foliage, and Flowers

Tree size and growth characteristics of ‘FairchildLS’ have been consistent with ‘Fairchild’ throughout the evaluations. Growth of both the ‘Fairchild’ and the ‘FairchildLS’ selection has been generally rounded and somewhat spreading in the first four years, followed by a tendency to grow into a more compact, dense rounded crown in ensuing years. The eleven-year-old ‘FairchildLS’ “mother” tree at Riverside on Carrizo citrange rootstock is 2.7 m high and 3.0 m wide with a rounded, compact growth habit yielding a canopy volume of 12.72 m³ (FIG. 3) with a scion circumference of 37.9 cm and a rootstock circumference of 52.4 cm (FIG. 5). In comparison, eleven-year-old ‘Fairchild’ control trees on ‘Carrizo’ (from the same block as the ‘FairchildLS’ “mother” tree) have averaged 2.8 m tall and 2.9 m wide yielding a canopy volume of 12.33 m³ on Carrizo citrange rootstock with a scion circumference of 36.9 cm and a rootstock circumference of 49.9 cm. In the younger multi-location trials, five-year-old ‘FairchildLS’ trees on Carrizo rootstock have averaged 2.5 m in height and 2.4 m in diameter with canopy volumes of 7.54 m³ (FIG. 4). Trees on C35 rootstock averaged 2.4 m in height and 2.4 m in diameter with canopy volumes of 7.24 m³. Diameter of the four scaffold branches at a point 15 cm from the trunk was measured and averaged 6.3 cm (values 5.1, 5.5, 7.0 and 7.5 cm).

Leaves of ‘FairchildLS’ are lanceolate in shape and concave in cross section. They have an acute apex with weak emargination and an acute base, and are dark-green in color (FIG. 7). Petioles are short and normal, lacking wings. The selection further lacks thorns.

Flowers of ‘FairchildLS’ are hermaphroditic with whitish petals (RHS Greenish White 157D) on both upper and lower surfaces, and yellowish (RHS Yellow 13C) anthers and are borne in clusters (FIG. 8). Pollen viability for ‘FairchildLS’ is low (25-35% germination) in comparison to ‘Fairchild’ (84% pollen germination) and pollen production is significantly reduced (about 20% of the quantity of pollen grains produced by ‘Fairchild’).

TABLE 1
Tree, leaf, flower and seed characteristics of ‘FairchildLS’ mandarin
(for nine- to eleven-year-old tree or five-year-old tree)
1.	Tree height (on Carrizo rootstock)	2.7 m
2.	Crown diameter	3.0 m
3.	Crown shape	Round, compact
4.	Scion circumference/rootstock	38.5 cm/55.0 cm
	circumference Ion Carrizo rootstock
	measurement taken at 15 cm above
	soil surface)
5.	Scion circumference/rootstock	37.0 cm/53.0 cm
	circumference (on C35 rootstock)
6.	Bud-union characteristics	Slightly benched*
	(citranges)
7.	Rootstock-scion compatibility	Excellent (with citranges)
8.	Tree vigor	Moderately vigorous
9.	Bark color	RHS Grey-Brown 199A
10.	Leaf shape	Lanceolate
11.	Leaf cross-section	Concave
12.	Leaf blade length	80.8 mm
13.	Leaf blade width	25.5 mm
14.	Leaf apex	Acute with weak emargination
15.	Leaf base	Acute
16.	Leaf margins	Very slightly crenate
17.	Leaf abaxial color	RHS Green 137A
18.	Leaf adaxial color	RHS Green 143A
19.	Petiole length	10.6 mm ± 0.9
20.	Petiole width	1.6 mm
21.	Petiole wings	Absent
22.	Petiole color	RHS Green 137A
23.	Thorniness	Not present
24.	Inflorescence type	Clustered
25.	Flowering habit	Flowers once per year
26.	Flower size	13.0 mm (medium)
27.	Flower structure	Complete
28.	Petal color	RHS Greenish white 157D
29.	Anther color	RHS Yellow 13C
30.	Pollen viability	Low (25-35%)
	(germination in culture)
31.	Pollen color	RHS Yellow 13C
32.	Scion diameter/rootstock	12 cm/18 cm
	diameter (on Carrizo rootstock
	measurement taken at 15 cm above
	soil surface)
*The term “benched” means that the scion diameter is considerably less than the rootstock diameter and that the angle of the tissue across the bud union is greater than 45°.

TABLE 1.1
Flower characteristics of ‘FairchildLS’ mandarin
(for nine- to eleven-year-old tree or five-year-old tree)
	Characteristics	Mean	SD
	petal number	5		0
	petal length	13.7	mm	0.55	mm
	petal width	5.5	mm	0.049	mm
	petal shape	elliptic
	petal apex shape	obtuse
	petal base shape	truncate
	petal margin	entire
	bud length	12.2	mm	0.24	mm
	bud diameter	5.7	mm	0.043	mm
	bud shape	linear
	bud color	155D
	sepal number	5		0
	sepal length - free	1.66	mm	0.11	mm
	sepal width	2.13	mm	0.22	mm
	Sepal shape (nonfused portion)	Deltoid
	Sepal apex	acute
	Sepal margin	entire
	Sepal color - abaxial	1D
	Sepal color - adaxial	1D

Fruiting, Fruit and Production Characteristics

Fruit of ‘FairchildLS’ are deeply oblate in shape with no neck. The fruit has a slightly concave basal end (moderately depressed) with a truncate (slightly depressed) distal end and a non-persistent style. The fruit is medium sized for a mandarin (classified as Large by State of California standards), averaging 64 mm in diameter and 56 mm in height. The fruit further has a smooth, deep orange rind color (RHS Orange N25B) and relatively inconspicuous, slightly depressed oil glands. The rind is of medium adherence at maturity and relatively thin, averaging 3.5 mm in thickness, which makes the fruit only moderately easy to peel. The fruit interior has a moderately fine flesh texture with 11-12 segments and a semi-hollow axis of medium size at maturity. The fruit are juicy, averaging 47% juice and average 110 g in weight. Fruit from trees on Carrizo citrange rootstocks averaged 12.1-13.0% soluble solids and 0.85-1.17% acid in January at four trial locations in California with soluble solids increasing to 13.2-14.5%, and acid decreasing to 0.76-0.93% by mid-March (Table 5). Fruit from trees on C35 citrange rootstocks averaged 11.2-12.8% soluble solids and 0.94-1.23% acid in January at four trial locations in California with soluble solids increasing to 13.1-14.0% and acid decreasing to 0.78-1.01% by mid-March. Fruit average 2.4±0.6 seeds per fruit in the presence of substantial cross-pollination pressure at all trial locations (summarized from Table 4). Seeds, when present, are polyembryonic, with a slightly yellowish-white outer seed coat (RHS Yellow-White 158A), a grayish-orange (RHS Greyed-Orange 164C) inner seed coat, and grayish-yellow (RHS Greyed-Yellow 160C) colyledons.

Fruit production of ‘FairchildLS’ begins in the third year after planting, which is similar to ‘Fairchild’. Fruit production on four-year-old trees averaged 28.0-49.2 kg, and on five-year-old trees averaged 41.6-64.7 kg at the fruiting trial sites (FIG. 6, Table 3). The original “mother” tree at Riverside was similar in fruit production at age four and five years (45.2 and 72.1 kg—not shown in Table 3). As the original tree aged, some alternate bearing became apparent in years seven and eight. This is similar to ‘Fairchild’ mandarin, which has a history of alternate bearing.

Fruit storage trials included storage of washed but not waxed fruit at 5.6° C. for up to 45 days with fruit samples taken every 15 days for analysis. Data indicates that the storage characteristics of ‘FairchildLS’ are very good with no measureable loss of rind quality or color, no significant loss in juice quality or deterioration in taste, and no significant indication of fungal or other disease problems over the 45 day storage period.

TABLE 2
Fruit characteristics of ‘FairchildLS’ mandarin at maturity
1.	Fruit shape	Deep oblate
2.	Fruit diameter	64.0 mm ± 3.3
3.	Fruit height	56.1 mm ± 2.3
4.	Aspect ratio (height/diameter)	0.88
5.	Fruit: shape of basal end	Slightly concave (flattened at stem)
6.	Fruit: shape of distal end	Truncate (slightly depressed)
7.	Fruit: distal end areola	Present but faint (18.8 mm in
		diameter)
8.	Fruit neck	Not present
9.	Style	Not persistent
10.	Rind texture	Moderately smooth
11.	Oil glands	Slightly conspicuous, slightly
		depressed
12.	Rind Color	RHS Orange N25B
13.	Rind thickness	3.5 mm
14.	Albedo thickness	1.5 mm
15.	Albedo color	RHS Yellow-Orange 23C
16.	Rind adherence	Medium
17.	Rind separation	Slight
18.	Flesh (pulp) color	RHS Orange-Red N30D
19.	Flesh (pulp) texture	Moderately fine
20.	Number of segments	11-12
21.	Axis: structure	Semi-hollow
22.	Axis: size	Medium
23.	Navel presence	Not present
24.	# Seeds/fruit (mean)	2.4 ± 0.6 (cross-pollinated
		conditions)
25.	Seed embryony	Polyembryonic
26.	Seed coat color	Yellow-White 158A
27.	Seed cotyledon color	Greyed-Yellow 160C
28.	Seed inner coat color	Greyed-Orange 164C
29.	Fruit weight	110 g
30.	% Juice	47.2%
31.	% Soluble solids (at maturity)	12.6%
32.	% Acid (at maturity)	1.11%
33.	Season of maturity	Mid-season (early January-April)
34.	Fruit holding ability	4-8 weeks
	on tree past maturity
35.	Fruit quality after storage	Very Good
	(5.6° C., 45 days)

TABLE 3
Crop yields for ‘FairchildLS’ and ‘Fairchild’ (control trees) at four
trial sites over two years, 2006/2007, 2007/2008, and 2008/2009.
			Age		2006/7	2006/7	2007/8
			in		Mean	Yield	Mean
		#	2009	Root-	Yield	Range	Yield
Site	Selection	Trees	(yrs)	stock	(kg)	(kg)	(kg)
River-	‘FairchildLS’	10	6	Carrizo	40.1	29.8-	48.3
side						57.9
River-	‘FairchildLS’	9	6	C35	38.8	27.8-	49.2
side						45.9
River-	‘FairchildLS’	1	11	Carrizo	64.8	64.8	46.3
side	(mother)
River-	‘Fairchild’	2	11	Carrizo	68.5	62.4-	47.7
side	control					74.6
Coach-	‘FairchildLS’	6	4	Carrizo	*	*	15.2
ella
Coach-	‘FairchildLS’	6	4	C35	*	*	13.4
ella
Coach-	‘Fairchild’	3	4	Carrizo	*	*	16.7
ella	control
Irvine	‘FairchildLS’	6	5	Carrizo	7.2	0-14.6	28.2
Irvine	‘FairchildLS’	6	5	C35	6.1	0-12.4	34.1
Irvine	‘Fairchild’	4	5	Carrizo	18.1	9.4-	37.1
	cntl					25.2
Lind-	‘FairchildLS’	6	4	Carrizo	*	*	19.2
cove
Lind-	‘FairchildLS’	6	4	C35	*	*	23.4
cove
Lind-	‘Fairchild’	4	5	Carrizo	8.6	3.0-	31.7
cove	cntl					13.8
			Age		2007/8	2008/9	2008/9
			in		Yield	Mean	Yield
		#	2009	Root-	Range	Yield	Range
Site	Selection	Trees	(yrs)	stock	(kg)	(kg)	(kg)
River-	‘FairchildLS’	10	6	Carrizo	32.1-	67.2	53.1-
side					60.6		82.4
River-	‘FairchildLS’	9	6	C35	31.0-	64.7	55.1-
side					66.9		79.4
River-	‘FairchildLS’	1	11	Carrizo	46.3	70.4	70.4
side	(mother)
River-	‘Fairchild’	2	11	Carrizo	44.1-	66.9	62.9-
side	control				51.3		70.9
Coach-	‘FairchildLS’	6	4	Carrizo	8.1-	32.2	19.3-
ella					24.4		38.1
Coach-	‘FairchildLS’	6	4	C35	6.3-	35.9	17.9-
ella					21.7		46.4
Coach-	‘Fairchild’	3	4	Carrizo	14.1-	29.7	21.8-
ella	control				18.7		32.0
Irvine	‘FairchildLS’	6	5	Carrizo	22.8-	41.6	36.1-
					43 .9		62.4
Irvine	‘FairchildLS’	6	5	C35	27.8-	43.5	39.8-
					45.9		65.9
Irvine	‘Fairchild’	4	5	Carrizo	24.6-	49.2	41.5-
	cntl				47.9		54.6
Lind-	‘FairchildLS’	6	4	Carrizo	10.1-	30.1	18.8-
cove					27.4		36.1
Lind-	‘FairchildLS’	6	4	C35	8.4-	28.9	15.9-
cove					29.7		35.4
Lind-	‘Fairchild’	4	5	Carrizo	24.4-	35.6	26.4-
cove	cntl				38.7		42.0
* Not fruiting

TABLE 4
Seed counts (average number of seeds per fruit) for ‘FairchildLS’
and ‘Fairchild’ (control trees) at four trial sites over two years,
2007/2008 and 2008/2009.
				2007/8	2007/8	2008/9	2008/9
		Tree		Mean	Seed	Mean	Seed
		Age	Root-	Seeds/	Count	Seeds/	Count
Site	Selection	(yrs)	stock	Fruit	Range	Fruit	Range
River-	‘Fair-	6	Carrizo	2.5	1.9-3.6	2.4	2.2-3.3
side	childLS’	(10
		trees)
River-	‘Fair-	6	C35	2.4	2.1-3.3	2.6	2.0-3.0
side	childLS’	(9
		trees)
River-	‘Fair-	11	Carrizo	2.3	NA	2.4	NA
side	childLS’	(1
	(mother)	tree)
River-	‘Fairchild’	11	Carrizo	18.9	10.1-	21.4	18.6-
side	control	(2			14.4		24.2
		trees)
Coach-	‘Fair-	4	Carrizo	1.8	0.8-2.6	1.9	1.2-2.7
ella	childLS’	(6
		trees)
Coach-	‘Fair-	4	C35	2.0	1.3-2.5	2.2	1.3-2.7
ella	childLS’	(6
		trees)
Coach-	‘Fairchild’	4	Carrizo	17.8	15.2-	18.9	16.1-
ella	control	(4			20.4		23.2
		trees)
Irvine	‘Fair-	5	Carrizo	2.2	1.8-2.6	2.4	2.0-2.6
	childLS’	(6
		trees)
Irvine	‘Fair-	5	C35	2.0	1.6-2.4	2.3	1.9-2.7
	childLS’	(6
		trees)
Irvine	‘Fairchild’	5	Carrizo/	16.2	13.8-	15.5	12.9-
	control	(4	C35		20.4		19.3
		trees)
Lind-	‘Fair-	4	Carrizo	1.2	0.9-2.0	1.5	0.8-2.1
cove	childLS’	(6
		trees)
Lind-	‘Fair-	4	C35	1.3	0.7-	1.4	1.1-2.2
cove	childLS’	(6			0.1.8
		trees)
Lind-	‘Fairchild’	4	Carrizo	14.8	12.3-	15.4	13.9-
cove	control	(2			17.3		16.9
		trees)

TABLE 5
Mean and standard deviation (S.D.) of soluble solids, acid and
solids/acid ratio for ‘FairchildLS’ on Carrizo and C35 citrange
rootstock at four trial sites, 2007/2008 crop year.
		Soluble		Soluble		%
		Solids %		Solids		Acid
Site	Date	Carrrizo	S.D.	% C35	S.D.	Carrizo
Riverside	Dec. 17,	11.1	0.37	10.7	0.46	1.35
	2007
Riverside	Jan. 15,	12.4	0.26	12.0	0.45	1.11
	2008
Riverside	Feb. 9,	13.3	0.49	12.9	0.33	0.98
	2008
Riverside	Mar. 18,	14.5	0.53	14.0	0.47	0.86
	2008
Coachella	Dec. 17,	12.0	0.31	10.3	0.36	0.97
	2007
Coachella	Jan. 15,	13.0	0.29	12.7	0.29	0.85
	2008
Coachella	Feb. 15,	13.4	0.33	13.0	0.24	0.81
	2008
Coachella	Mar. 20,	13.1	0.55	13.1	0.41	0.76
	2008
Irvine	Dec. 17,	11.5	0.68	11.9	0.39	1.31
	2007
Irvine	Jan. 15,	12.3	0.32	12.8	0.50	1.09
	2008
Irvine	Feb. 9,	13.5	0.40	13.4	0.22	0.95
	2008
Irvine	Mar. 18,	14.4	0.42	14.2	0.31	0.91
	2008
Lindcove	Dec. 17,	9.8	0.51	9.3	0.33	1.41
	2007
Lindcove	Jan. 15,	12.1	0.27	11.2	0.29	1.17
	2008
Lindcove	Feb. 9,	12.8	0.40	12.5	0.40	1.02
	2008
Lindcove	Mar. 18,	13.9	0.39	13.6	0.56	0.93
	2008
			%		S/A	S/A
			Acid		Ratio	Ratio
Site	Date	S.D.	C35	S.D.	Carrizo	C35
Riverside	Dec. 17,	0.13	1.32	0.10	8.2	8.1
	2007
Riverside	Jan. 15,	0.10	1.19	0.08	11.2	10.1
	2008
Riverside	Feb. 9,	0.06	1.04	0.06	13.6	12.4
	2008
Riverside	Mar. 18,	0.08	0.94	0.05	16.7	14.9
	2008
Coachella	Dec. 17,	0.12	1.06	0.07	12.4	9.7
	2007
Coachella	Jan. 15,	0.09	0.94	0.09	15.3	13.5
	2008
Coachella	Feb. 15,	0.16	0.85	0.04	16.5	15.3
	2008
Coachella	Mar. 20,	0.10	0.78	0.09	18.2	16.8
	2008
Irvine	Dec. 17,	0.14	1.28	0.11	8.8	9.3
	2007
Irvine	Jan. 15,	0.13	1.17	0.11	11.3	10.9
	2008
Irvine	Feb. 9,	0.08	0.97	0.07	14.2	13.9
	2008
Irvine	Mar. 18,	0.08	0.90	0.08	15.8	15.8
	2008
Lindcove	Dec. 17,	0.15	1.46	0.18	7.0	7.0
	2007
Lindcove	Jan. 15,	0.11	1.23	0.12	10.1	9.1
	2008
Lindcove	Feb. 9,	0.06	1.09	0.07	12.5	11.7
	2008
Lindcove	Mar. 18,	0.06	1.01	0.08	14.9	13.5
	2008

TABLE 6
Comparison of ‘FairchildLS’ with other mid to mid-late season,
low-seeded mandarins. Data for Riverside, California.
Trait	‘FairchildLS’	‘Tango’	‘TDE3’	‘TDE4’	‘DaisySL’
Maturity	Early-	Late-	Late-	February	Early
	January.	January	January		December-
					early
					January.
Seeds per	2.4	0.15	0.29	0.32	2.2
fruit
RHS rind	Orange	Orange	Orange-	Orange-	Orange-
color	N25B	N25A	Red	Red	Red
			N30C	N30C	N30C
Rind texture	moderately	smooth	papillate	smooth	very
	smooth				smooth
Fruit weight	110	90	134	175	135
(g)
Fruit	0.88	0.81	0.85	0.78	0.88
height/width
Alternate	medium	low	medium-	medium-	medium
bearing			high	high

No susceptibilities to plant or fruit diseases, or to pests, beyond those normally associated with citrus species have been observed.

Claims

1. A new and distinct mandarin tree having the characteristics substantially as described and illustrated herein.