摘要
用２０ｍｍｏｌ／ＬＣａＣｌ２浸种处理能显著提高玉米种子在干旱胁迫下的萌发率，改善玉米幼苗的生长状况，减轻胚根在干旱胁迫下的膜伤害，提高其活力和玉米幼苗在强干早胁迫下的存活率。但钙提高的玉米幼苗的抗旱性可被ＣａＭ抑制剂所消除。钙处理也能提高玉米幼苗在干旱胁迫下的脯氨酸积累量，这可能是钙提高玉米幼苗抗旱性的生理基础之一。
The effects of Ca2+ and calmodulin treatments on the drought resistance of maizeseedlings were studied in this paper. Soaking maize seeds with 20 mmol/L CaCl2 solutionsignificantly increased their germination percentage, improved the growth of theseedlings,alliviated the membrane damage of maize embryonic roots,enhanced their vitality and the survival percentage of maize seedlings under drought stress. However,thiscalcium-enhanced drought resistance could be weakened by the treatment of calmodulininhibitors CPZ. In addition, CaCl2 treatment also raised the proline content of theseedlings under drought stress,which could be one of the physiological bases for the enhancement of drought resistance by CaCl2 in the maize seedlings.
出处
《西北植物学报》
CAS
CSCD
北大核心
1996年第3期214-220,共7页
Acta Botanica Boreali-Occidentalia Sinica
基金
国家自然科学基金
云南省应用基础研究基金
关键词
调钙蛋白
钙调素
钙
抗旱性
玉米
cacium,calmodulin
drought resistance
proline
Zea mays
