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Breeding reporter of a new high quality litchi cultivar Datanghong

Date:2024/4/26 9:23:30 Visit:

The new litchi (Litchi chinensis Sonn.) cultivar, Datanghong,was selected from seedling variations. Observationon several generations of vegetative progenies proved that the hereditary traits of the line were stable. The prominent traits of this new cultivar include: ①high edible rate, with highly aborted seed ; ②high and stable yield with significantly higher fruit retention and less fruit crackingas; ③late maturing with fruit harvested in the late June, the mature stage is7-10 days later than Guiwei and 3-7 days earlier than Heli. ④The fruit is heart shaped, large, with bright red peel and inconspicuous suture, thick and crispy flesh with strong sweetness and slight fragrance;The average weight of single fruit is 40.68 g and the maximum weight of single fruit is 48.70 g. The longitudinal diameter of fruit is 44.46 mm, the transverse diameter is 43.11 mm and lateral diameter is 21.13 mm. The weight of abortive seeds is 0.3-1.1 g, the longitudinal diameter of fruit is13.83 mm, the transverse diameter is 10.32 mm and lateral diameter is 7.99 mm. The species is of good quality with 80.86 % edible rate, 19-24 %Soluble solids content, 19.3 % the conetnt of total sugar, 0.09 % the content of titratable acid, 274.24 μg/g the content of vita-min C as well as 85 % the coke core. It has good grafting affinity with Heli, with is not easy to crack fruit. The species is a tall tree, with tree growth habit spreading and tree vigor semi-circular. The leaves are long elliptic and opposite, with the tips ecoming blunt tip and base broadly cuneate. The young leaves are yellow green and the old leaves are dark green as well as shiny. The leaves are 110.08 mm long and 34.26 mm wide. The petioles are 8.49 mm long. The flower is cone- shaped, the average flowers are 21.59 cm long and 18.32 cm wide. After many years re-gional trials, it was found that the genetic character was stable and has a broad prospect for extention. Selecting the plot with deep soil layer, high organic matter content and no pollution builds plantations. The row and plant spacing (4-5) m × (5-8)m in flat. Pruning shall be carried out immediately after fruit picking of adult fruiting trees,mainly with short cutting and light thinning, branch pulling including when necessary. The variety is suitable for large-scale de-velopment in the hot areas of low latitude and low altitude in Guangxi.





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