Effects of Drought Stress at Different Periods on Agronomic Traits of Millet

doi:10.3969/j.issn.1000-7091.2012.06.025

Abstract

Abstract: Using movable rain shelter shed to keep off precipitation， the pot experiment was carried out to study effects of drought stress at different periods on agronomic traits of millet． Phonological periods，plant height， the leaf number， flag leaf's area， spike length，and the roots sheaves number were investigated，Yields were measured after harvest． The results showed that phonological periods were delayed under drought stress． The drought treatment at jointing stage had the worst effects on plant height． Water stress could affect the leaves' growth，but it hadn't affected the whole leaf number at all． Flag leaf's area under jointing and earing stage was smaller than other stages． The roots' growth was restrained by drought stress， it could recovered rapidly after restoring water，however． Drought stress at jointing stage had the biggest effect on agronomic traits． Grain yield could be lowered by drought stress especially the stress at pustulation period．

Key words: Millet, Drought stress, Agronomic characters, Yield

CLC Number:

S515.01

WANG Yong-li, WANG Jue, DU Jin-zhe, GUAN Yan-an. Effects of Drought Stress at Different Periods on Agronomic Traits of Millet[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2012, 27(6): 125-129. doi: 10.3969/j.issn.1000-7091.2012.06.025.

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