2002•Xibei zhiwu xuebaoRequires access
Effects of different soil water treatment on flag leaf senescence of different drought-endaring wheat cultivars
Yuefu Wang, Yu Zhenwen, Pan Qingmin
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Abstract
Under the condition of trough culture with rain-proof shelter,the effects of different soil water treatment on flag leaf senescence of different drought-endaring wheat cultivars were studied.The results showed that,with the decrease of soil water,the content of chlorophyll and iPAs as well as the photosynthetic rate of flag leaf declined,while the content of MDA and ABA increased.As a result,the flag leaf senescence accelerated and the yield decreased remarkablely.Compared with irrigated field cultivar Lumai7,the change amplitude of the indices which had been mentioned above of non-irrigated field cultivar Lainong 8834 decreased significantly as the soil water declined,which founded the physiology basis that Lainong 8834 achieved relatively high yield under the condition of soil water dificit.