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从1995年河北省棉花品种审定委员会开始受理转基因抗虫棉参试以来,共审定冀中南春播转基因抗虫棉品种35个,杂交种20个,本研究对审定品种的主要产量及相关性状进行了分析。分析结果表明:审定品种多集中在2006-2008年,常规品种霜前皮棉产量呈上升态势,杂交种产量呈先上升后稳定趋势,2002-2003参试年份之前衣分逐年得到明显提高,以杂交种最为明显,从37.6%上升到41.9%,之后逐步稳定在40%左右,常规种衣分也有明显提高,单铃重则延续了上升态势,变化幅度为4.9~6.5 g,单株成铃变化较小。对比常规品种和杂交种表明,杂交种可以迅速改良产量,但到一定程度后,两者表现逐渐趋同。
Since 1995, when Hebei Province Cotton Variety Approval Committee started to test transgenic cotton, 35 varieties of spring-sown transgenic cotton have been examined and 20 hybrids have been sowed in spring. The main yield and related traits of the tested varieties were studied analysis. The results showed that the varieties of validation were mostly concentrated in 2006-2008, the lint yield of conventional varieties increased before the frost, the yield of hybrids first increased and then stabilized, and the percentage of lint increased significantly from 2002-2003 before the test year The most obvious species, rose from 37.6% to 41.9%, then gradually stabilized at about 40%, conventional seed clothing points also increased significantly, single boll weight continued the upward trend, the range of change of 4.9 ~ 6.5 g, the change of bolls per plant Smaller. Comparison of conventional varieties and hybrids shows that the hybrids can quickly improve the yield, but to a certain extent, the two gradually converge.