土壤干旱对棉花生理特性与产量的影响  

The Effect of Dry Land on the Physiological Characters and Yields in Cotton

作　　者：程林梅[1] 张原根[1] 阎继耀[1] 张和[1] 

机构地区：[1]山西省农科院,山西省农科院作物遗传研究所

出　　处：《棉花学报》1995年第4期233-237,共5页Cotton Science

摘　　要：土壤干旱条件下，棉花不同品种、不同生育时期对水分胁迫的反应不同。抗旱种质材料８２０２比非耐旱品种黑山棉表现为叶水势高、水分饱和亏缺少、气孔阻力大、蒸腾强度小、细胞膜透性、呼吸强度及光合速率变化幅度小、脯氨酸积累多的生理特性。中等耐旱品种塔什干生理指标变化幅度介于８２０２与黑山棉之间。抗旱系数为８２０２＞塔什干＞黑山棉，不同生育时期各项指标对水分胁迫的敏感程度为花期＞铃期＞蕾期。Under soil drought,the reaction to water stress in different varieties at differ-ent growth and development periods appeared different.A drought─resistant germplasmmaterial 8202 showed higher leaf water potentia,less water saturation deficiency,greaterstomata resistance,lower transpiration rat,lower varied rates of cell membance─perme-ability,respiratory rate and photosynthesis rate,and higher accumulation of proline thanthat of a non-drought-resistant cotton variety Heishan.The varied rates of physiologi-cal indexes of a mediate drought-resistant variety Tashikant were between 8202 and Heis-han cotton.The order of drought-resistance indexes from large to small was 8202,Tashikant and Heishan cotton.The order of all drought-resistance indexes susceptibilityto water stresses at different growth and development periods from large to small wasblooming period,bearing bolling period and squaring period.

关 键 词：棉花 土壤 干旱 生理特性 产量 

分 类 号：S562.01[农业科学—作物学]