Scholarlink

<p>The necrosis disease caused by <i>tobacco streak virus</i> (TSV) is highly destructive. Conventional management practices for TSV includes cultural methods such as crop rotation, maintaining field sanitation, rogueing of infected plants, intercropping with non-host crops of short duration, eliminating weed hosts like <i>Parthenium</i> and insecticide application to control vectors. However, the most efficient and convenient approach to combat this devastating disease is to cultivate resistant varieties. TSV distribution in the germplasm of ELS cotton, <i>Gossypium barbadense</i>, appears to be significant. In a consecutive two-season screening at ICAR-Central Institute for Cotton Research (CICR), Regional Station, Coimbatore, a total of three hundred <i>G. barbadense</i> germplasm lines were screened under natural field conditions for TSV. Among them, fourteen germplasm lines were categorized as Resistant (R), twenty-two as Moderately Resistant (MR), one hundred and sixty-eight as Moderately Susceptible (MS), and ninety-four as Susceptible (S) lines. The identified fourteen resistant germplasm lines of <i>G. barbadense</i> can be valuable resources in breeding programs as donor parents to develop TSV-resistant lines. These findings highlight the critical role of TSV resistance in sustaining cotton productivity, especially in disease-prone regions. The strong association between resistance and yield-related traits such as boll number and plant vigour suggests that integrating TSV resistance into breeding programs can significantly enhance the development of high-yielding, disease-tolerant cotton cultivars. In addition, traits like plant height and sympodial branching can be effectively used as indirect selection criteria for identifying promising genotypes under TSV pressure. Utilizing these lines in breeding efforts can contribute to the development of resistant varieties against TSV.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Field evaluation of germplasm lines of extra-long staple cotton (Gossypium barbadense) for tobacco streak virus resistance

  • 期刊论文

  • 发表日期：

    2025年8月12日

查看全文
  • Valarmathi Pandian,
  • Amutha Mari

摘要

The necrosis disease caused by tobacco streak virus (TSV) is highly destructive. Conventional management practices for TSV includes cultural methods such as crop rotation, maintaining field sanitation, rogueing of infected plants, intercropping with non-host crops of short duration, eliminating weed hosts like Parthenium and insecticide application to control vectors. However, the most efficient and convenient approach to combat this devastating disease is to cultivate resistant varieties. TSV distribution in the germplasm of ELS cotton, Gossypium barbadense, appears to be significant. In a consecutive two-season screening at ICAR-Central Institute for Cotton Research (CICR), Regional Station, Coimbatore, a total of three hundred G. barbadense germplasm lines were screened under natural field conditions for TSV. Among them, fourteen germplasm lines were categorized as Resistant (R), twenty-two as Moderately Resistant (MR), one hundred and sixty-eight as Moderately Susceptible (MS), and ninety-four as Susceptible (S) lines. The identified fourteen resistant germplasm lines of G. barbadense can be valuable resources in breeding programs as donor parents to develop TSV-resistant lines. These findings highlight the critical role of TSV resistance in sustaining cotton productivity, especially in disease-prone regions. The strong association between resistance and yield-related traits such as boll number and plant vigour suggests that integrating TSV resistance into breeding programs can significantly enhance the development of high-yielding, disease-tolerant cotton cultivars. In addition, traits like plant height and sympodial branching can be effectively used as indirect selection criteria for identifying promising genotypes under TSV pressure. Utilizing these lines in breeding efforts can contribute to the development of resistant varieties against TSV.