【摘要】 以海岛棉和陆地棉不育系及其恢复系为杂交亲本,配制了10个海岛棉与陆地棉种间三交种(简称海陆三交种)和4个单交种。经两年田间试验表明,海陆三交种相对于海海单交种产量极显著提高,与海陆单交种无显著差异,但比陆陆单交种显著减产;纤维品质接近于海陆单交种,显著高于陆陆单交种;制种产量虽然不及陆陆单交种,但比海海单交种显著增产。选育海陆三交种应注重选择早熟的海岛棉不育系,高衣分的陆地棉临时保持系,大铃的陆地棉恢复系,且叶型和株型相对一致的亲本配制组合。更多还原

【Abstract】 In order to utilize heterosis of interspecific hybrid cotton between Gossypium barbadense and G.hirsutum and increase its hybrid seed yield,10 three-way cross hybrids and 4 single cross hybrids were produced using cytoplasmic male sterile,maintainer and restorer lines in G.barbadense and G.hirsutum,and were evaluated in a Randomized Complete Block Design with three replications during 2005-2006 at Zhejiang University Farm.The results showed that the cotton yield of three-way cross hybrids was very significant higher than that of single cross hybrids in G.barbadense,and similar with single cross hybrids between G.barbadense and G.hirsutum,but lower than single cross hybrids in G.hirsutum.For the cotton fiber quality,three-way cross hybrids were not only better than single cross hybrids in G.hirsutum but also had a same level to single cross hybrids between G.barbadense and G.hirsutum.Especially,three-way crossing was able to produce higher hybrid seed yield than single crossing in G.barbadense although was not in G.hirsutum.It is suggested that early mature sterile lines in G.barbadense,high lint percentage and boll weight maintainer and restorer lines in G.hirsutum,and with relative uniformity in plant shape using as parents might be considered in the breeding program of three way cross hybrid.更多还原