Varietals differences in agronomic performance of six wheat varieties grown under saline field environment

被引：13

作者：

Ahmad M. ^{[1
]}

Niazi B.H. ^{[1
]}

Zaman B. ^{[1
]}

Athar M. ^{[2
]}

机构：

[1] Institute of Natural Resources and Environmental Sciences, National Agricultural Research Center, Pakistan Agricultural Research Council

[2] California Department of Food and Agriculture, Sacramento, CA 95814

来源：

International Journal of Environmental Science & Technology | 2005年 / 2卷 / 1期

关键词：

Grain yield; K/Na ratio; K[!sup]+[!/sup; Na[!sup]+[!/sup; Soil salinity; Wheat;

D O I：

10.1007/BF03325857

中图分类号：

学科分类号：

摘要：

Six wheat varieties (SARC-1, SARC-2, SARC-3, SARC-4, LU26S and Punjab-85) were planted in the field to evaluate their comparative performance under saline conditions. LU26S appeared the most salt-tolerant variety and gave the highest grain weight due to its low Na+ uptake, high K+/Na+ ratio, higher dry weight of shoots and spikes and better grain development. Better exclusion of Na+ and other ions from the leaves of salt-tolerant variety LU2 6S could also be a reason for its ability to maintain a higher grain weight in the saline soil. Punjab-85 appeared the most salt-sensitive variety as its dry weight of main shoots and spikes were also found to be the lowest. High Na+ uptake, lower K+/Na+ ratio, lower dry weight of main shoots and spikes and lower 100 grain weight were the main reasons for salt-sensitivity in Punjab-85. Dry weight of shoots, spikes and grain weight of SARC-3 under saline soil conditions was almost similar to the salt-sensitive variety Punjab-85 and could be classified as salt-sensitive. Flag leaf area decreased drastically due to salt stress in all the varieties and this could be a major cause for low yield. There was however, a very low linear correlation between the flag leaf area and the grain weight in pooled data for all the six wheat varieties.

引用

页码：49 / 57

页数：8

共 17 条

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