中棉所29不同部位棉铃干物质积累动态研究  

Study on the Dynamics of Dry Matter Accumulation of Different Part of Boll in Cotton of CCRI 29

作　　者：马海莲[1] 李存东[1] 张建平[1] 王向东[1] 李龙江 

机构地区：[1]河北农业大学农学院,保定071001 [2]河北张家口市农业技术推广站,张家口075000

出　　处：《棉花学报》2004年第4期240-242,共3页Cotton Science

基　　金：国家自然科学基金项目(30370833);河北省博士资金项目;河北省自然科学基金项目(303179)部分内容。

摘　　要：以抗虫杂交棉中棉所29为材料、33B为对照,设早、中、晚三个播期,分上、中、下三个部位,对铃壳及子棉的干物质积累动态分别进行了研究。结果表明,中棉所29在铃壳营养物质的再分配及子棉干重积累方面具有明显的杂种优势。不同播期结果表现为:在适期早播情况下,利于中棉所29棉铃铃壳中的干物质向子棉中转移,以提高其单铃重;中部棉铃铃壳干物质转移率和子棉的干物质积累量明显高于下部和上部果枝棉铃。The study was conducted on experiment farm of Hebei Agricultural University from 2001-2002,which was with CCRI 29, a variety of hybrid cotton with Bt-gene, as material and 33B as control. The CCRI 29 and 33B were sowed in three different dates (4/15, 4/21 and 4/29) and the dynamics of dry matter accumulation of boll shell and seed cotton with different parts of the cotton plant (upper, middle, lower) were examined, respectively. The lower is the first or second boll of 1～3 branches, the middle is the first or second boll of 6～8 branches, and the upper boll is above 11 branches. The result suggested that CCRI 29 had expressed significant heterosis in nutrition matter redistribution of boll shell and dry matter accumulation of seed cotton. Suitable early sowing is favorable for the dry matter in boll shell to be transported to seed cotton, which could improve the seed cotton weight per boll increasingly. The dry matter transportation ratio of shell and dry matter accumulation rate of seed cotton of the middle boll were much higher than upper boll and lower boll, which may offer a theory basis for establishing a favorable boll setting model of hybrid cotton CCRI 29.

关 键 词：中棉所29 棉铃 干物质积累 动态研究 

分 类 号：S562.01[农业科学—作物学]