摘要
对不结球白菜“矮抗6号”制种产量构成因素进行相关与通径分析。结果表明：单株结英数、每英粒数、每株粒数与单株种子产量呈极显著正相关，相关系数分别为0．8288、0．8402、0．8728。通段分析表明：单株结英数对单株种子产量的直接作用较大，而每英粒数对单株种子产量通过单株英数的间接作用较大。所以单株结英数是单株种子产量构成中最主要的因素。种子产量在植株上的分布情况：一级分枝的英数占总英数的64．23％，一级分校是生产种子的主要部位。植株的中上层测技的种子产量分别占单株种子产量的31．73％和29．78％，主枝的种子产量仅占8．12％。
The correlation and path analysis ofthe compose factors of seed yield of non-headingChinese cabbage' Dwarf Resistant No. 6' wereconducted. The results indicated that there was asignificant positive correlation between the seed yieldper plant (Y) and the number of pods per plant(X1 ), the number of grains per pod (X2 ) and thenumber of grains per plant (X3 ). The correlationcoefficients were 0. 828 8, 0. 840 2 and 0. 872 8respectively. The results of path analysis showed thatX1 has the highest direct effect on Y, The indirectconttibution of X2 to Y through X1 was higher thanthat of the others. X1 was the most important factorwhich affected the seed yield. Yield distribution ofseed in the different parts of plant was alsoinvestigated. The ramifications of the first brancheswere the main yielding part, the percentage of theghs in this part was 64. 23%. Seed yield of theupperstrata lateral branches and the middle-stratalateral branches respectively was 31. 73% and29. 78% in the total yield, while that of the leaderbranch accounted only for 8. 12 %
出处
《长江蔬菜》
1997年第6期27-30,共4页
Journal of Changjiang Vegetables
基金
"八五"国家科技攻关项目!85-04-01-01
关键词
不结球白菜
种子产量
矮抗6号
制种
Non-heading Chinese cabbage
Seed yield
‘Dwarf Resistant No.6'
