【摘 要】
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国内外的研究证明:油菜利用细胞质不育“三系”、胞核不育“两用系”和自交不亲和系等途径配制杂种均表现不同程度的杂种优势。具体表现在(1)生长势强、伤流量多、出叶速度
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国内外的研究证明:油菜利用细胞质不育“三系”、胞核不育“两用系”和自交不亲和系等途径配制杂种均表现不同程度的杂种优势。具体表现在(1)生长势强、伤流量多、出叶速度快、叶绿素含量高;(2)角果数、籽粒数、千粒重等获得提高;(3)有显著的增产效果。我国油菜杂种优势利用研究自60年代开始,相继育成白菜型“三系”(四川),甘蓝型自交不亲和系(湖北),核不育“两用系”(上海),甘蓝型雄性不育“三系”(湖南)。其杂交种产量优势率一般为20—45％。但是如何将杂种优势利用与品质融为一体,在改良品质的基础上提高产量,国内外尚未见报导。本文阐述在原有甘蓝型油菜杂种优势利用研究成果的基础
Domestic and foreign studies have shown that: rape use of cytoplasmic male sterility “three lines”, nuclear sterile “dual” and self-incompatible lines and other ways to prepare hybrids showed varying degrees of heterosis. The results are as follows: (1) strong growth potential, more traumatic flow rate, faster leaf speed and higher chlorophyll content; (2) increased number of pod, kernel number and 1000-grain weight; (3) increased yield. Research on Utilization of Hybrid Rapeseed in China Since the 1960s, three types of cabbage-type “three lines” (Sichuan), self-incompatible lines of Brassica (Hubei), “dual-purpose lines” Infertility “three lines” (Hunan). Its hybrid yield advantage rate is generally 20-45%. However, how to integrate the utilization of heterosis with the quality and improve the yield on the basis of improving the quality have not been reported at home and abroad. This article describes the basis of the research results on the heterosis utilization of the original Brassica napus
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