论文部分内容阅读
冀优768是利用携带有外源抗棉铃虫Bt基因的326作母本,以具有海岛棉、陆地棉、野生棉遗传基础的322系作父本,其后代在黄枯萎混生重病地、不防治棉铃虫的高压胁迫下,经过连续定向选择育成。其突出表现早熟、抗棉铃虫、高产、抗病。2003-2004年在河北省冀东棉花品种区域试验中,霜前皮棉较对照品种新棉33B、DP99B分别增产40.6%和39.2%;2004年生产试验,籽棉、皮棉和霜前皮棉产量分别较对照DP99B增产14.1%,29.0%和38.5%,籽皮棉产量均居第1位;纤维长度29.7 mm,整齐度84.9%,比强度28.7 cN/tex,伸长率6.4%,麦克隆值5.0。2006年4月通过河北省农作物品种审定委员会审定(审定编号:冀审棉2006017),准予在冀东及同一生态类型区推广。
Ji-You 768 was a female parent of 326 with Bt gene exogenous to Helicoverpa armigera, whose parental line was 322 lines with the genetic basis of sea-island cotton, upland cotton and wild cotton. Under the high-pressure stress of cotton bollworm, it is bred by continuous orientation selection. Its outstanding performance precocious, anti-bollworm, high yield, disease resistance. 2003-2004 in Hebei Province Jidong cotton varieties regional trials, frost lint than the control varieties New cotton 33B, DP99B increased 40.6% and 39.2% respectively; 2004 production tests, seed cotton, lint and frost before the lint yield compared with the control DP99B yield increased by 14.1%, 29.0% and 38.5%, and the seed cotton yield ranked the first place; the fiber length was 29.7 mm, the uniformity was 84.9%, the specific intensity was 28.7 cN / tex, the elongation was 6.4% and the micronaire value was 5.0. In April through the Hebei Province Crop Variety Approval Committee examined (validation number: Hebei trial cotton 2006017), allowed to promote in the eastern part of Jidong and the same ecological type.