Genetic Variation Studies of Ionic and within Boll Yield Components in Cotton (Gossypium Hirsutum L.) Under Salt Stress

ABSTRACT

Cotton (Gossypium hirsutum L.) productivity is decreasing alarmingly by salinity. For genetic analysis of cotton response to salinity 8 parental genotypes and their 16 F₁ crosses were evaluated in Line × Tester fashion under normal and salt stress 15 dSm⁻¹. Data were recorded for plant height, number of bolls plant⁻¹, boll weight, lint weight, seed cotton yield plant⁻¹, lint percentage, seed index, lint index, number of seeds boll⁻¹, seed mass boll⁻¹, lint mass boll⁻¹, lint mass per seed, seed volume 100⁻¹ seeds, seed surface area, ionic ratio, fiber strength, fiber length, fiber fineness, GOT %, SOD, POD, CAT, TSP, and H₂O₂. The results showed that SCA estimates were higher than the GCA indicating the preponderance of non-additive gene action. Kahkashan, MS-71, and CRS-2007 were found good general combiner whereas FH-114 × FH-312 was found the best specific combiner. FH-114 × KAHKASHAN and FH-114 × FH-312 demonstrated significant heterosis for most traits under normal and salt stress conditions. The present study revealed that salt tolerance ability is controlled by a few dominant genes in the identified genotypes.

摘要

棉花 (Gossypium hirsutum L.的生产力正因盐度而急剧下降. 对16个杂交组合进行了盐胁迫下的亲本基因型分析. 记录了株高株铃数1铃重皮棉产量株1皮棉百分率种子指数皮棉指数籽铃数1种子质量铃1皮棉质量1每粒皮棉质量种子体积100-1粒种子比表面积离子比纤维强度纤维长度纤维细度GOT%SODPODCATTSP和H2O2. 结果表明SCA估计值高于GCA表明非加性基因作用占优势. KahkashanMS-71和CRS-2007被认为是良好的通用合路器而FH-114×FH-312是最佳的专用合路器. 在正常和盐胁迫条件下FH-114×KAHKASHAN和FH-114×FH-312多数性状表现出显著的杂种优势. 本研究表明在已鉴定的基因型中耐盐能力受少数显性基因控制.

KEYWORDS:

• Cotton
• salinity
• Line × Tester
• gene action
• ionic homeostasis
• fiber traits
• antioxidants
• hydrogen peroxide

关键词:

• 棉花
• 盐度
• 线路×测试仪
• 基因作用
• 离子稳态
• 纤维特性
• 抗氧化剂
• 过氧化氢

Disclosure statement

The authors declare that they have no conflict of interest for the publication of the manuscript.

Authors’ contributions

MMZ, AR, MAF, and AS conducted experiment, contributed equally, and wrote the initial draft of the manuscript. AR, HF, and HM contributed in data analysis, MR, MA, and YY proofread the manuscript.

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.

Additional information

Funding

Department of Plant Breeding and Genetics, University of Agriculture Faisalabad, Faisalabad-Pakistan and Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang-China.