Effect of water stress on photosynthesis and growth in two teak phenotypes

被引：8

作者：

Rajendrudu, G ^{[1
]}

Naidu, CV

Mallikarjuna, K

机构：

[1] Sri Venkateswara Univ, Dept Bot, Tirupati 517502, Andhra Pradesh, India

[2] Sri Venkateswara Univ, Dept Biotechnol, Tirupati 517502, Andhra Pradesh, India

来源：

PHOTOSYNTHETICA | 1999年 / 36卷 / 04期

关键词：

leaf growth; net photosynthetic rate; stomatal conductance; Tectona grandis; transpiration rate;

D O I：

10.1023/A:1007064725963

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Two teak (Tectona grandis L.f.) phenotypes differing in their leaf length/breadth ratios were subjected to water stress by withholding water supply for three weeks. Growth rates of whole plants, developing leaves (1(st) and 2(nd) from shoot apices), and 2(nd) and 3(rd) internodes were higher in broad leaved (BL) phenotype than in narrow leaved (NL) phenotype before and after imposing water stress treatment. However, the effect of water stress on these parameters was higher in the BL phenotype than in the NL one, Diurnal course of net photosynthetic rate (P-N) of 3(rd) of 4(th) leaves from shoot spices measured under well-watered conditions was higher for the NL than BL phenotype, P-N, stomatal conductance (g(s)), and transpiration rate (E) in both phenotypes were negatively affected by water stress and their decline under water stress was significantly higher in the BL than NL plants.

引用

页码：627 / 630

页数：4