Spatial distribution of bolls affects yield formation in different genotypes of Bt cotton varieties

作     者：NIE Jun-jun YUAN Yan-chao QIN Du-lin LIU Yan-hui WANG Shuang-lei LI Jin-pu ZHANG Mei-ling ZHAO Na GUO Wen-jun QI Jie MAO Li-li SONG Xian-liang SUN Xue-zhen 

作者机构：State Key Laboratory of Crop BiologyMinistry of Science and Technology/College of AgronomyShandong Agricultural UniversityTai’an 271018P.R.China Technical Guidance Station of Cotton Production in Shandong ProvinceJinan 250013P.R.China Qufu Agricultural BureauQufu 273100P.R.China Yantai Agricultural Technology Extension ServiceYantai 264000P.R.China Seed Management Department of PingdingshanPingdingshan 467000P.R.China Shanghai Center for Plant Stress BiologyChinese Academy of SciencesShanghai 201602P.R.China 

出 版 物：《Journal of Integrative Agriculture》 (农业科学学报（英文版）)

年 卷 期：2019年第18卷第11期

页      面：2492-2504页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 

基　　金：supported by the National Natural Science Foundation of China (31601253) the Modern Agroindustry Technology Research System, China (SDAIT-03) the Natural Science Foundation of Shandong Province, China (ZR2016CQ20) 

主　　题：Bt cotton yield formation boll spatial distribution lint yield fiber quality 

摘      要：To optimize the spatial distribution of cotton bolls and to increase the yield,the relationship between yield components and boll spatial distribution was investigated among different Bt(Bacillus thuringensis)cotton varieties.A five-year field experiment was conducted to reveal the reasons for the differences in lint yield and fiber quality across three Bt cotton varieties with different yield formations from 2013 to *** lint yield of Jiman 169(the average yield from 2013-2017 was 42.2 g/plant)was the highest,i.e.,16.3 and 36.9%higher than Lumianyan 21(L21)and Daizimian 99B(99B),*** the differences in boll weight among the three cultivars were similar to the lint yield,while the others yield components were *** the increase in lint yield was mainly attributed to the enlargement in boll ***,the change in fiber quality was inconsistent with the lint yield,and the quality of L21 was significantly better than that of Jimian 169(J169)and 99B,which was caused by the diversity of boll spatial *** with 99B,the loose-type J169 had the highest number of large bolls in inner positions;the tight-type L21 had a few large bolls and the highest number of lower and middle *** approximately 80.72%of the lint yield was concentrated on the inner nodes in Jiman 169,compared with 77.44%of L21 and 66.73%of 99B during the five-year *** lint yield was significantly affected by the interannual changes,the lint yield of J169 was the highest and the most stable,as well as its yield *** observations demonstrated the increase in lint yield was due to the increase in boll weight,and the large bolls and high fiber quality were attributed to the optimal distribution of bolls within the canopies.