摘要
通过对印度南瓜果实主要数量性状的通径分析表明，各性状与单瓜产籽数的相关程度依次为单瓜重（０．８７６５）＞瓜横径（０．８６２２）＞瓜纵径（－０．７４７２）＞籽粒长（０．５６９４）＞籽粒宽（０．４２８４）＞千粒重（－０．０６０４）。各性状对单瓜产籽数起直接作用大小依次为瓜横径（０．４７４９）＞单瓜重（０．３６３８）＞籽粒宽（０．２１２２）＞瓜纵径（－０．１７４１）＞籽粒长（－０．１２５７）＞千粒重（－０．０４２７）。瓜横径和单瓜重对单瓜产籽数具有决定性的正向直接作用，瓜纵径为负向直接作用。在籽用南瓜丰产育种中，应以瓜横径和单瓜重作为主要性状选择指标，同时注意瓜纵径的牵制作用。
The correlation analysis and path analysis of the main quantity characteristics of fruit of pumpkin (C. maxima)were studied in this paper. The correlation coefficient between the seeds Per fruit and the other characters of the fruit are as follows: the average fruit weight (0. 8765)>the fruit width (0. 8622) >the fruit length (-0. 7472) >seeds length (0. 5694 ) > seeds width(0. 4284)>the weight of a thousand seeds (-0. 0604). The main factors the seeds yeild per fruit are as follows: width of the fruit (0. 4749 ) >weight of the fruit (0. 3638 )>width of the seeds (0. 2122) >length of the fruit (-0. 1741 )> length of the seeds (-0. 1257 ) > the weight of a thousand seeds(-0. 0472).The seeds yeild per fruit Positively effected by the width of the fruit,average weight of the fruit otherwise the negative effected by the length of the fruit. So the width and weight of the fruit could be as the selected characteristics in breeding of the pumpkin seeds used variety and pay attention to the adverse effects of the length of the fruit.
出处
《华北农学报》
CSCD
北大核心
1996年第1期114-117,共4页
Acta Agriculturae Boreali-Sinica
基金
国家自然科学基金
关键词
印度南瓜
产籽数
通径系数
南瓜
Pumpkin(C. maxima)
Seeds per fruit
Path coefficient
