GROWTH, PLANT WATER RELATIONS, PHOTOSYNTHESIS RATE AND ACCUMULATION OF PROLINE IN YOUNG CARAMBOLA PLANTS IN RELATION TO WATER-STRESS

被引：8
|
作者：
ISMAIL, MR
BURRAGE, SW
TARMIZI, H
AZIZ, MA
机构：
[1] UNIV LONDON WYE COLL,DEPT HORT,ASHFORD TN25 5AH,KENT,ENGLAND
[2] PALM OIL RES INST MALAYSIA,BANGUI,MALAYSIA
来源：
SCIENTIA HORTICULTURAE | 1994年 / 60卷 / 1-2期
关键词：
WATER STRESS; AVERRHOA CARAMBOLA; LEAF WATER POTENTIAL; RELATIVE WATER CONTENT; CANOPY TRANSPIRATION; STOMATAL RESISTANCE; PHOTOSYNTHETIC RATE; PROLINE; LIGHT RESPONSE;
D O I：
10.1016/0304-4238(94)90065-5
中图分类号：
S6 [园艺];
学科分类号：
0902 ;
摘要：
The effects of water availability on growth, water relations and related plant physiological and biochemical activities of young starfruit (Averrhoa carambola) plants were investigated. Plant vegetative growth was inhibited with reduced water availability. Leaf water potential, relative water content and canopy transpiration were reduced with increasing soil water stress. Leaf photosynthesis rate was reduced when stomatal resistance exceeded 3.5 s cm(-1). Proline was 8.1, 13.2 and 20.5 times higher in the leaves of plants that were stressed for 1, 2 and 4 weeks, respectively, compared with the control. Photon flux density higher than 1000 mu mol m(-2) s(-1) reduced the leaf photosynthetic rate of stressed and unstressed plants.
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页码：101 / 114
页数：14
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