摘要
从南京中山植物园引进8个品种美国山核桃的穗条,高接于8年生的实生大树上,观察各品种花期,测定其单株产量、单果质量、果仁质量、果壳厚度、果实横径、果实纵径、果形指数、出仁率和出油率等9个指标,并采用主成分分析法对美国山核桃果实性状进行综合评价。结果表明:各品种美国山核桃开花物候期比较集中,雄花花期大体在4月上旬至5月上旬,雌花花期大体在4月中旬至5月上旬;不同品种美国山核桃果实性状间存在较为复杂的相关性。主成分综合得分最高的品种是“马罕”,综合得分最低的品种是“绍兴1号”。共筛选出“马罕”“波尼”“金华1号”“肖尼”等4个主成分综合得分较高的品种,适宜在长沙地区种植。“黄山1号”“卡多”和“绍兴1号”等3个品种的综合得分较低,在生产上可以作为授粉品种或砧木使用。
The panicle strips of 8 varieties of Carya illinoensis were introduced from Nanjing Zhongshan Botanical Garden were grafted on 8-year-old trees. The flowering period of each variety was observed. Nine indexes, such as yield per plant, fruit quality, kernel thickness, fruit transverse diameter, fruit vertical diameter, fruit shape index, kernel yield and oil yield were measured, and the fruit characters were comprehensively evaluated by principal component analysis. The results showed that the flowering phenology of different varieties of C. illinoensis was concentrated, the male florescence was from early April to early May, and the female florescence was from mid-April to early May. There was a complex correlation among fruit characters of different varieties. The variety with the highest principal component comprehensive score was "Mahan", and the variety with the lowest comprehensive score was "Shaoxing No.1". Four varieties with high principal component comprehensive scores of "Mahan", "Boni", "Jinhua No.1" and "Shawny" were selected, which were suitable to be planted in Changsha City. The comprehensive scores of "Huangshan No.1", "Kaduo" and "Shaoxing No.1" were relatively low, which can be used as pollination varieties or rootstocks in production.
作者
翟学杰
ZHAI Xuejie(Hunan Xiangyi Agriculture and Forestry Technology Co.,Ltd,Changsha 410000,Hunan,China)
出处
《湖南林业科技》
2022年第4期15-20,共6页
Hunan Forestry Science & Technology
基金
中小微科技企业科技创新项目(2019-6-1933)
湖南省林业科技创新项目(XLK202108-4)。
关键词
美国山核桃
开花物候期
果实性状
主成分分析
Carya illinoinensis
flowering phenology
fruit character
principal component analysis
