大豆品种遗传改良过程中叶片可溶性糖含量和比叶重的变化.pdfVIP

第26卷 第6期 大 豆 科 学 Vo1．26 No．6 2007年 12月 SOYBEAN SCIENCE Dec． 2007 大 口 口日种遗传改良过程中叶片可溶性糖含量和比叶重 的变化 王晓慧 ，徐克章 ，李大勇 ，张治安 ，武志海 ，陈展宇 ，张秀荣 (1．吉林农业大学农学院，长春 130118；2．自依拉嘎乡农业技术推广站，前郭131113) 摘要 为探讨大豆品种遗传改良过程中可溶性糖含量和比叶重与产量的关系，研究了吉林省1923 到2004年育成的3O个大豆品种不同生育期叶片可溶性糖含量和比叶重的变化，并对大豆叶片可 溶性糖含量和比叶重与产量的关系进行了分析。结果表明：大豆叶片的可溶性糖含量和比叶重都 随育成年代而增加，从不同生育期来看，花期和结荚期的可溶性糖含量变化较明显，苗期和鼓粒期 变化不明显；而比叶重在花期和鼓粒期明显高于苗期和结荚期。可溶性糖含量在花期和产量呈正 相关，苗期和结荚期次之，鼓粒期呈负相关。比叶重在四个生育期都和产量呈正相关。因此，在大 豆品种遗传改良过程中，可溶性糖含量和比叶重的性状得到了改善。 关键词 大豆；遗传改良；比叶重；可溶性糖含量；产量 中图分类号 S565．1 文献标识码 A 文章编号 1000—9841(2007)06—0879—06 VARIATIoN oF SoLUBLE SUGAR CoNTENT AND SPECIFIC LEAF WEIGHT DURING THE GENETIC IMPRoVEMENT oF SoYBEAN CULTIVARS W ANG Xiao—hui ，XU Ke—zhang ，LI Da—yong ，ZHANG Zhi—an ，WU Zhi—hai ，CHEN Zhan—yu ， ZHANG Xiu—rong (1．College of Agronomy，Jilin Agricultural University，Changchun 130118；2．Agro-tech Extension Sta- tion of Baiyilaga Town，Qianguo 131113) Abstract There is increment in soybean yield during the past decades．Although soluble sugar content(SSC)and specific leaf weight(SLW)affect photosynthesis and yield，the contribution of these two traits to yield genetic improvement is unclear．The obj ective of this study was tO eluci— date the changes of SSC and SLW during genetic improvement of soybean cultivars，as well as their correlation with yield．Thirty soybean cultivars released from 1923 to 2004 in Jilin Province were planted in randomized complete block design trail in 2006 year Plant sample were taken at ． each growth period and SSC and SLW were measured ． SSC and SLW increased with the year re— leased．SSC increased obviously at