Effects of Osmotic Stress on Water Status and Growth of Maize Seedlings

doi:10.3321/j.issn:1000-7091.2003.02.009

Abstract

Abstract: T he effects of osmotic stress with PEG?6000 on water status and growth of maize seedlings, Qin dan No.4 and Shandan 911, were studied by water culture in artificiaLgrowth shelter.It is indicated that RWC, water potential, leaf area, root system length and dry matter accumulation would be reduced with the in crease of osmotic stress in experiment period.And the range of reduction of Qindan No.4( a drought resistant variety) is less than Shandan 911( a drought sensitive one).But R/S of them are alLincreased.The leaf expan? sion rate of Qindan No.4 was lower than that of Shandan 911, but the root growth rate is greater.Moreover, Qindan No.4 would make quick adaptation response under osmotic stress, but Shandan 911 was slower.

Key words: Maize, Osmotic stress, Water status, Growth

CLC Number:

S513.1

ZHAO Li ying, DENG Xi ping, SHAN Lun. Effects of Osmotic Stress on Water Status and Growth of Maize Seedlings[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2003, 18(2): 33-35. doi: 10.3321/j.issn:1000-7091.2003.02.009.

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