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<p>Sixteen isolates of <i>Macrophomina phaseolina</i> isolated from different food legumes revealed substantial variability in respect of morphological features at genetic level. Out of sixteen isolates, isolate Mp3 (horse gram) and Mp4 (cowpea) were fast growing, whereas the isolates Mp7, Mp8 and Mp9 obtained from soybean were slow growing. The isolates originated from soybean showed the largest size of sclerotia, whereas, the smallest size of sclerotia was formed in the isolate obtained from horse gram. The maximum number of sclerotia was formed in the isolate Mp8 (soybean) and the minimum number in the isolate Mp3 (horse gram). The genetic variation among the&#xa0;isolates was detected using 19 SRAP primer combinations. The mungbean isolates (Mp5 and Mp6) exhibited a&#xa0;highest genetic similarity (90%), whereas the soybean isolates (Mp8 and Mp16) displayed the lowest genetic similarity (58%). SRAP marker analysis distinctly revealed genetic variation among isolates collected from various hosts and geographical regions. The isolates were grouped initially in two clusters, first cluster C1 having 14 isolates from different regions, whereas, Mp8 and Mp12 respectively from Madhya Pradesh and Delhi grouped in the&#xa0;second cluster C2. The results further demonstrated the applicability of SRAP marker in analysing genetic variation in natural population of <i>M. phaseolina</i>.</p>

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Morpho-molecular diversity analysis of Macrophomina phaseolina infecting different hosts

  • 期刊论文

  • 发表日期：

    2025年2月15日

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  • S. Kumar,
  • L. S. Rajput,
  • H. Bhati,
  • J. Akhtar,
  • P. Kumar,
  • S. C. Dubey

摘要

Sixteen isolates of Macrophomina phaseolina isolated from different food legumes revealed substantial variability in respect of morphological features at genetic level. Out of sixteen isolates, isolate Mp3 (horse gram) and Mp4 (cowpea) were fast growing, whereas the isolates Mp7, Mp8 and Mp9 obtained from soybean were slow growing. The isolates originated from soybean showed the largest size of sclerotia, whereas, the smallest size of sclerotia was formed in the isolate obtained from horse gram. The maximum number of sclerotia was formed in the isolate Mp8 (soybean) and the minimum number in the isolate Mp3 (horse gram). The genetic variation among the isolates was detected using 19 SRAP primer combinations. The mungbean isolates (Mp5 and Mp6) exhibited a highest genetic similarity (90%), whereas the soybean isolates (Mp8 and Mp16) displayed the lowest genetic similarity (58%). SRAP marker analysis distinctly revealed genetic variation among isolates collected from various hosts and geographical regions. The isolates were grouped initially in two clusters, first cluster C1 having 14 isolates from different regions, whereas, Mp8 and Mp12 respectively from Madhya Pradesh and Delhi grouped in the second cluster C2. The results further demonstrated the applicability of SRAP marker in analysing genetic variation in natural population of M. phaseolina.