Selection of genotypes of salinity tolerance rice during the vegetative phase

Ciência Rural

Melo, Palmira Cabral Sales de²  Oliveira, Francisco José de¹  Melo, Maria Rita Cabral Sales de¹  Santos, Venézio Felipe dos²  Anunciação Filho, Clodoaldo José da¹  Bastos, Gerson Quirino¹  Tabosa, José Nildo² 

[1] Universidade Federal Rural de Pernambuco, Recife, Brasil;Empresa Pernambucana de Pesquisa Agropecuária, Recife, Brasil

关键词: Oryza sativa;    cultivar;    saline soils;    electrical conductivity;    phenotypic characters;   

DOI  :  10.1590/S0103-84782006000100009

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

The objective of this work was to evaluate the degree of tolerance and sensibility to the salinity of genoty,pes of rice (Oryza sativa L.) during the vegetative phase of the plant. The experiment was lead under greenhouse conditions at IPA (Empresa Pernambucana de Pesquisa Agropecuária), in 1996. Twelve genotypes of rice had been evaluated, being ten tolerant and two sensible ones to salinity in the vegetative development stadium. The randomized blocks design were performed into three repetitions of factorials arrangements (twelve genotypes x four levels of NaCl). Results had evidenced variability existence among the genotypes of rice, in the specific population, for tolerance and sensitivity to the salinity. Samples PR492, PR504, CNA8250, CNA8262 and CNA8267 can be considered tolerant to salinity, while the genotypes CNA8270, CNA8258, CNA8269, PR475 and PR477 are sensible to salinity of soil during the vegetative phase.

【 授权许可】

CC BY-NC