Mechanism of Salt Tolerance in Rice

查看全文 作　　者：[1]N.HUSSAIN;[1]A.ALI;[1]G.SARWAR;[1]F.MUJEEB;[1]M.TAHIR

机构地区：[1]Soil Salinity Research Institute,Pindi Bhattian,Punjab(Pakistan),National Agriculture Research Center,Islamabad(Pakistan),Soil Salinity Research Institute,Pindi Bhattian,Punjab(Pakistan),Soil Salinity Research Institute,Pindi Bhattian,Punjab(Pakistan),UNDP-AusAIT-Govt.of Pakistan,Biosaline Community Project,Pindi Bhattian(Pakistan)

出　　处：《Pedosphere》索引2003年第13卷第3期,共6页

摘　　要：Shaheen Basma ti was evolved as a salt tolerant fine rice va riety by the Soil Salinity Research Institute,Pindi Bhattian, Pakistan. Water culture studies were conducted to investigate the physiological mechanismexercised by this variety in particular and rice plant in general to face the saline environment. Performanceof this rice variety and the concentration and uptake of ions were studied under stress of three salinity levels(30, 60 and 90 mmol L-1) created with NaCl. Recorded data indicated that shoot dry matter was notsignificantly affected by all the three levels of salinity. However, NaCl levels of 60 and 90 mmol L-1 affectedthe root dry matter significantly. Sodium concentration and uptake was enhanced significantly in root andshoot at the first level of salinity (30 mmol L-1) but thereafter the differences were non-significant, indicatingthe preferential absorption of this cation. The K concentration decreased significantly in shoots at all thelevels. The impact was less pronounced in roots as far as K absorption was concerned. The effect on Ca andMg concentrations was not significant. The values of K:Na, Ca:Na and (Ca+Mg):Na ratios in shoot and rootwere comparatively low under stress conditions, indicating that selective ion absorption may be the principalsalt tolerance mechanism of variety Shaheen Basmati when grown in a saline medium. 关键词：土壤学盐碱土改良盐分容许量水稻种植选择性离子吸收钠

相关文献

参考文献（17）
引证文献（37）
耦合文献（0）

参考文献(17)

引证文献(37)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Mechanism of Salt Tolerance in Rice

参考文献(17)

引证文献(37)

用户提示