CAJ | 학술논문

通过配制4个隐性无腺体品系（gl2gl2 gl3gl3）作母本与5个显性无腺体品系（Gle2Gle2 Gl3Gl3）杂交产生的20个组合的F2、F3，利用二倍体种子遗传模型，研究了棉花种子的含油量、蛋白质含量、油分指数、蛋白质指数等5个种子性状的遗传变异。结果表明所有研究的性状主要由加性遗传效应所控制，其中含油量主要由母体加性遗传效应所控。按群体平均数计算，这些性状F2的中亲优势仅为－1.99%～1.11%，这揭示出F2、F3近交衰退很少。有75%的F2和60%的F3天然授粉异交组合棉酚含量低于0.4g/kg，因此有可能筛选出棉酚含量低于规定标准、而种子品质不降低、可综合利用的F2高产杂交种。
통과배제4개은성무선체품계（gl2gl2 gl3gl3）작모본여5개현성무선체품계（Gle2Gle2 Gl3Gl3）잡교산생적20개조합적F2、F3，이용이배체충자유전모형，연구료면화충자적함유량、단백질함량、유분지수、단백질지수등5개충자성상적유전변이。결과표명소유연구적성상주요유가성유전효응소공제，기중함유량주요유모체가성유전효응소공。안군체평균수계산，저사성상F2적중친우세부위－1.99%～1.11%，저게시출F2、F3근교쇠퇴흔소。유75%적F2화60%적F3천연수분이교조합면분함량저우0.4g/kg，인차유가능사선출면분함량저우규정표준、이충자품질불강저、가종합이용적F2고산잡교충。
Twenty cross combinations were made with 4 recessive glandless lines (gl2gl2gl3gl3) used as females and 5 dominant glandless lines (Gle2Gle2 Gl3Gl3) used as male parents to estimate the genetic variance components of kernel oil and protein content of seeds, oil and protein index, and kernel index using a genetic model for parents, F2and F3. The results showed that all the analyzed traits were mainly controlled by additive effects. Oil content was controlled mainly by maternal additive effect, and other traits by direct additive effect. The average heterosis of F2 over mid-parent based on population mean was －1.99% to 1.11% for all these traits. It suggests that little inbreeding depression exists for F2 and F3 seeds. There were 75% and 60% of the F2 and the F3 combinations in which open-pollinated seeds contained gossypol levels lower than 0.4gkg－1. This result indicated that it is possible to screen and select high yielding F2 hybrids with a gossypol content lower than the regulated criterion and without lowering seed quality.