Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad, Pakistan.
J Zhejiang Univ Sci B. 2012 Jul;13(7):533-44. doi: 10.1631/jzus.B1200027.
The okra germplasm was screened for salinity tolerance at the seedling stage and during plant ontogeny. Substantial variation existed in okra for salinity tolerance at the seedling stage. An 80 mmol/L NaCl concentration was suitable for discriminating tolerant and non-tolerant okra genotypes. The pooled ranking of the genotypes, based on individual rankings for each trait (root and shoot length, germination percentage, and relative Na(+) and K(+)) in individual NaCl concentrations, was effective for selecting tolerant genotypes. Genotypes selected at the seedling stage maintained their tolerance to NaCl during plant ontogeny, suggesting that screening of the germplasm entries and advanced breeding materials for salt tolerance at the seedling stage is effective. Among 39 okra genotypes, five were identified as the most tolerant genotypes and showed potential for use in breeding programs that focus on the development of salt-tolerant, high-yield okra cultivars.
对秋葵种质资源在幼苗期和植物个体发育过程中的耐盐性进行了筛选。秋葵在幼苗期的耐盐性存在很大差异。80mmol/L NaCl 浓度适合区分耐盐和非耐盐秋葵基因型。基于个体在各 NaCl 浓度下（根和茎的长度、发芽率以及相对 Na(+)和 K(+)）的个体排名进行的基因型综合排名，可有效选择耐盐基因型。在植物个体发育过程中，幼苗期筛选出的基因型对 NaCl 仍保持耐盐性，这表明在幼苗期对种质资源和优良育种材料进行耐盐性筛选是有效的。在 39 个秋葵基因型中，有 5 个被鉴定为最耐盐的基因型，它们具有培育耐盐、高产秋葵品种的潜力。
