摘要
试验比较了2个棕色棉种间杂种Z08B×H08B、H08B×Z08B,1个棕色棉种内杂种Z08B×L08B及其棕色棉亲本Z08B(CK)在苗期、蕾期、初花期、盛花期、花后期和吐絮期6个时期植株叶片叶绿素a和b质量分数、叶绿体希尔反应活力、净光合速率等光合生理指标和碳水化合物质量分数及其产量、品质性状的差异.结果表明:3个棕色棉杂种的籽棉产量和皮棉产量均显著高于对照,平均分别提高46.71%和38.57%;3个杂种的品质性状也显著优于对照,尤其是棕色棉种间杂种,其纤维长度平均比对照增长7.59 mm,增幅达35.53%,纤维强度比对照增加5.96 cN·tex-1,提高23.51%;与棕色棉亲本相比,棕色棉杂种植株叶片的叶绿素质量分数较高,叶绿体希尔反应活力增强,淀粉质量分数较大,使得其净光合速率升高,营养物质供应充足,是棕色棉杂种高产和优质的重要光合生理特性.
two brown interspecific hybrids Z08B×H08B,H08B×Z08B,one intraspecific hybrid Z08B×L08B and their brown parent Z08B(CK) were used as plant materials to measure several photosynthetic indexes,such as leaf chlorophyll a and b content,Hill reaction activity,net photosynthesis rate and carbohydrate contents at seedling,squaring,early flowering,middle flowering,late flowering,and boll opening stages,and the yield and fiber quality.The result showed that the seed cotton yield and lint yield in the three hybrids were all significantly higher than CK,and average increased by 46.71% and 38.57%,respectively.The fiber quality traits of the three hybrids were also much better than CK,and especially the two interspecific hybrids,their fiber length and strength increased 7.59 mm and 5.96 cN·tex-1 by 35.53% and 23.51% more than CK,respectively.Compared with the brown parent,the leaf of the brown hybrids had a higher chlorophyll content,a stronger Hill reaction activity and more starch content,which indicated a higher net photosynthesis rate than CK and more sufficient metabolism substrate supply.These might be the physiological reasons for the higher yield and better fiber quality traits in brown-colored hybrid cotton.
出处
《浙江大学学报(农业与生命科学版)》
CAS
CSCD
北大核心
2011年第1期54-60,共7页
Journal of Zhejiang University:Agriculture and Life Sciences
基金
农业部转基因生物新品种培育重大专项资助项目(2008ZX08005-005-2
2009ZX08009-061B)
浙江省重点科技资助项目(2008C22087)
关键词
棕色棉
种间杂种
产量
光合特性
brown-colored cotton
interspecific hybrid
yield
photosynthetic characteristics