孙飘云 闫晋强 刘文睿 谢大森 何晓明 王敏 彭庆务 江彪



摘要 通过对墨宝冬瓜和7个冬瓜高代自交系配制的9个杂交组合的子房长、子房横径、成熟瓜长和成熟瓜横径4个农艺性状进行相关性分析,以期揭示冬瓜子房与成熟果实的遗传相关性,为根据子房大小预测成熟果实大小提供依据。结果表明,子房长与成熟瓜长呈正相关且达极显著水平,与成熟瓜横径呈显著正相关。 该研究为冬瓜育种和生产提供理论参考。
关键词 冬瓜;子房;成熟果实;遗传相关;通径分析
中图分类号 S642.3 文献标识码 A
文章编号 0517-6611(2021)01-0037-05
doi:10.3969/j.issn.0517-6611.2021.01.010
Abstract In this study, four agronomic traits,including ovary length, ovary width, mature fruit length and mature fruit width were investigated in the experimental field among Mobao Donggua and 9 hybrids made between 7 inbred lines.Thereafter, the correlation analysis and path analysis were performed to reveal the relation between ovary and mature fruit in wax gourd.The results indicated a extremely significant positive correlation between ovary length and mature fruit length, and a significant positive correlation between ovary and mature fruit width.It was found that mature fruit width had a positive correlation with mature fruit length.This study provided theoretical reference for the breeding and production of wax gourd.
Key words Wax gourd;Ovary;Mature fruit;Genetic correlation;Path analysis
冬瓜(Benincasa hispida(Thunb.)Cogn.)为葫芦科冬瓜属一年生草本植物,起源于我国南部及印度[1],现广泛分布于亚洲的热带、亚热带和温带地区[2]。果实是冬瓜的主要食用部位,含有蛋白质、碳水化合物、维生素以及矿质元素等营养成分,兼具药用和保健功效,属典型的高钾低钠型蔬菜[3]。由于其耐储运、货架期长,在调节蔬菜淡季、保证周年供应中发挥着重要作用[4]。
利用相关性及通径分析的方法,研究作物各农艺性状之间的相互关系,对作物育种有重要的借鉴和参考意义[5]。近年来,育种者对冬瓜瓜长、瓜横径、瓜肉致密性、中腔及单瓜重与冬瓜产量之间的相关性进行了研究,谢大森等[5]对56个冬瓜品种的13个性状进行了遗传相关性和通径分析,结果表明,瓜长、瓜肉致密性、横径、单瓜重与总产量有密切关系, 瓜肉致密性是构成冬瓜单瓜重和总产量的主要性状,瓜长对产量的贡献最大。……