板栗优良品种安栗一号和二号的选育研究

在采用指标法选出50个板栗优良单株的基础上，经过10年的无性系子代鉴定和产量比较试验，生长习性，结果习性和抗逆性观测，及对其果实的营养成分分析，最后筛选出“安栗一号”和“安栗二号”2个优良单。选育结果表明：安栗一号和安栗二号的连续3年平均产量可分别达到2268，2286kg/hm^2，第2年结果株率为95．0％和95．5％，出果率为45．2％和45．7％；3年生板栗树结果枝率分别为95．7％和92．5％；果实中淀粉、粗蛋白、可溶性糖、粗脂肪的含量分别达到504，84．2，253，51．2g/kg和512，82．5，251，51．3g/kg;2个品种还具有耐旱、耐瘠薄、抗病虫能力强和适应性广等特点。

A Study on Breeding of Good Varieties of Chinese Chestnut Anli No. 1 and No. 2

Based on the selected 50 good individuals of Chinese chestnut, by determination of the clone filial generation and experiment of yielding comparison, by measurement of the growth regularity and fruiting characteristics and the resistance, and by analysis of nutritional composition through 10 years, the two good varieties of Chinese chestnut Anli No.1 and No.2 have been bred. The average annual yields of the Anli No.1 and No.2 for continuous 3 years is 2 268 and 2 286 kg/hm 2 respectively. The nut fruiting and producting rate for the two varieties at the second year is 95.0% and 95.5% ,45.2% and 45.7% respectively.The twig fruiting rate for the two varieties at the third year is 95.7% and 92.5% respectively. The contents of starch, coarse protein, soluble sugar, coarse fat for the two varieties is 504,84.2,253,51.2 and 512, 82.5 ,251,51.3 g/kg respectively.The two good varieties have the advantages of drought resistance, barren resistance, diseases and insect pests resistance and wide suitability and so forth.