摘要
本文论述了节瓜强雌系的特征，用１次出交，３次回交和１次系内异交的方法选育出Ｒ８９—３—３—２、Ｒ８９—３—３—５和Ｒ８９—３—７—５３个强雌系，强雌系的强雌株率分别为９５．２％、９７．６％和９８．３％．用强雌系Ｒ８９—３—７—５作母本，“江心”节瓜为父本配制的一代杂种比对照ＣＫ“七星”节瓜增产３８．５６％，达极显著水平．节瓜强雌系随播种时间的推迟而单株雄花数相对增多，纯雌株率相对降低．
The article discusses the characteristics of chieh-qua more female lines.Three more female lines: R89-3-3-2, R89-3-3-5 and R89-3-7-5 of chieh qua whose female rates were 95. 2%, 97.6% and 98.3% were obtained through 5 generations by using a test-crossing,three back-crossings and a crossing on lines. Hybridywith significant yield heterosis. R89-3-7-5×'Jiang Xin'was successfully bred, withyield exceeding check cultivar('Qi xing') 38. 56 %.
出处
《山东农业大学学报（自然科学版）》
CSCD
1996年第3期275-280,共6页
Journal of Shandong Agricultural University：Natural Science Edition
关键词
节瓜
强雌系
杂种优势
杂种
种子生产
chich-qua: more-female lines
heterosis
hybrid-seed production
