但因光a纯合态的低衣分，其亲本繁殖和杂交制种时皮棉产量降低，故光a不育系在杂种优势中的利用有优势又有劣势。
However, Guang a has disadvantages as well as advantages in the utilization of heterosis because of its low lint percentage in parent propagation and hybrid seed production.
小麦与六倍体燕麦杂交其F1杂种植株体细胞染色体不完全排除，表明可以将燕麦优良基因导入小麦，以拓宽小麦的种质资源。
The somatic cell chromosomes in F1 hybrid plants indicated that good genes of oats can be introduced into the bread wheat to enrich the germ plasm resources of the wheat.
GS豫豆8号是用系谱法从郑74046品系与尖叶桥梁亲本自然杂交株的杂种后代中选育成的窄叶型大豆新品种。
GS Yudou 8 is a narrow-leafed soybean variety derived from the natural hybrid of Zheng 74046 line and a tip soybean parent material (paternal) with a pedigree selection method.
应用化学杂交剂(CHA)诱导雄性不育是小麦杂种优势利用的重要途径之一。
Male sterility of wheat inducing by Chemical hybridization agents (CHA) is one of the main ways to produce hybrid wheat seed.
应用双列杂交设计，研究了遗传来源不同的12个甘蓝型油菜品种间66个双列组合的单株籽粒产量及产量性状的杂种优势。
Heterosis of seed yield and its components of 66 crosses, from a diallel cross design of 12 parental varieties of Brassica napus L. were studied.
从基因组基因平均水平和分子水平上揭示杂种优势形成的遗传基础，为棉花杂交种育种提供理论依据。
Furthermore, the genetic basis of heterosis was revealed on average level of gene and molecular level. All these results provided theoretic basis for cotton hybrid breeding.
小麦作为世界主要的粮食作物，对其杂种优势利用的研究，特别是雄性不育机理的研究，一直是众多杂交小麦育种者设法攻克的难关。
Wheat as the main food crop, studying its utilization of heterosis and male sterility is the matter that many breeders have been trying to overcome.
以中国高粱胞质雄性不育系“吉农105”为研究试材，用9个常用高粱恢复系与之杂交，并对其杂种后代F 1、F2及BC1的育性分离比例进行了统计调查。
The separation of fertility in F1, F2 and BC1 from crosses between cytoplasmic male sterile line of Chinese sorghum "Jinong 105" and 9 restoring lines of sorghum were statistically analysed.
以中国高粱胞质雄性不育系“吉农105”为研究试材，用9个常用高粱恢复系与之杂交，并对其杂种后代F 1、F2及BC1的育性分离比例进行了统计调查。
The separation of fertility in F1, F2 and BC1 from crosses between cytoplasmic male sterile line of Chinese sorghum "Jinong 105" and 9 restoring lines of sorghum were statistically analysed.
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