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<p>Chemical mutagenesis is a pivotal tool for enhancing genetic diversity in horticultural crops. This study evaluates the mutagenic effects of EMS and MMS on <i>Capsicum annuum</i> L. var. NS1101 to enhance genetic variability for yield-related traits. Seeds of the M<sub>0</sub> generation were treated with EMS and MMS at concentrations of 0.10–1.00% for 6&#xa0;h, and consequent induced genetic variations were evaluated in the M<sub>1</sub> and M<sub>2</sub> generations. A detailed analysis of the M<sub>2</sub> generation revealed chromosomal abnormalities, including chromosome fragmentation and micronuclei formation, although these were less frequent compared to the M<sub>1</sub> generation. Physio-morphological mutations, particularly leaf chlorophyll variants, were observed during seedling stages. The effects of EMS and MMS on yield and yield-related traits were also evaluated. The results demonstrated that EMS was a more effective mutagen than MMS, especially in the M<sub>2</sub> populations, although its efficiency decreased at higher concentrations. This study underscores the potential of EMS as a more potent mutagen for inducing beneficial mutations in chilli, offering insights into genetic mechanisms that could support future breeding programs focused on improving the production and yield of this important crop. </p>

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A comparative study of mutagenic efficacy of EMS and MMS in inducing quantitative and cytological variations in Capsicum annuum L. var. NS1101

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年6月10日

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  • Nazarul Hasan,
  • Sana Choudhary,
  • Dinesh Chandra Joshi,
  • Neha Naaz,
  • Nidhi Sharma,
  • Mahendar Singh Bhinda,
  • Rafiul Amin Laskar

摘要

Chemical mutagenesis is a pivotal tool for enhancing genetic diversity in horticultural crops. This study evaluates the mutagenic effects of EMS and MMS on Capsicum annuum L. var. NS1101 to enhance genetic variability for yield-related traits. Seeds of the M0 generation were treated with EMS and MMS at concentrations of 0.10–1.00% for 6 h, and consequent induced genetic variations were evaluated in the M1 and M2 generations. A detailed analysis of the M2 generation revealed chromosomal abnormalities, including chromosome fragmentation and micronuclei formation, although these were less frequent compared to the M1 generation. Physio-morphological mutations, particularly leaf chlorophyll variants, were observed during seedling stages. The effects of EMS and MMS on yield and yield-related traits were also evaluated. The results demonstrated that EMS was a more effective mutagen than MMS, especially in the M2 populations, although its efficiency decreased at higher concentrations. This study underscores the potential of EMS as a more potent mutagen for inducing beneficial mutations in chilli, offering insights into genetic mechanisms that could support future breeding programs focused on improving the production and yield of this important crop.