Effects of plant growth regulators on the antioxidant system in seedlings of two maize cultivars subjected to water stress

被引：112

作者：

Li, L ^{[1
]}

Van Staden, J ^{[1
]}

Jäger, AK ^{[1
]}

机构：

[1] Univ KwaZulu Natal, Dept Bot, Res Unit Plant Growth & Dev, ZA-3209 Pietermaritzburg, Scottsville, South Africa

来源：

PLANT GROWTH REGULATION | 1998年 / 25卷 / 02期

关键词：

antioxidant system; brassinolide; drought stress; methyl jasmonate; uniconazole; Zea mays;

D O I：

10.1023/A:1010774725695

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The effects of brassinolide, uniconazole and methyl jasmonate on the antioxidant system were studied in seedlings of drought-resistant (PAN 6043) and drought-sensitive (SC 701) cultivars of Zea mays L. When seedlings treated with the three regulators were subjected to water stress (-1.0 MPa PEG 6000 solution), the activities of superoxide dismutase, catalase and ascorbate peroxidase, as well as the ascorbic acid and total carotenoid contents, increased in the resistant cultivar, whereas the levels remained unaltered in the sensitive cultivar. The increased tolerance to drought stress induced by the growth regulators in the resistant cultivar seems to be due to the maintenance of increased antioxidant enzyme activity and antioxidant substance levels.

引用

页码：81 / 87

页数：7

共 33 条

[1] COMPARATIVE PHYSIOLOGY AND WATER RELATIONS OF 2 CORN HYBRIDS DURING WATER-STRESS [J].