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<p>The Indo-Burma biodiversity hotspot is recognised as a centre of rich agrobiodiversity, yet systematic germplasm collecting across several regions remains inadequate amid threats from socio-cultural changes and climate change. A survey-cum-exploration was conducted in November 2022 across the Churachandpur and Pherzawl districts of Manipur and the Saitual district of Mizoram, covering 52&#xa0;collecting sites involving 70 key informants. A total of 282 economic plant taxa belonging to 177 genera were documented, including 49 crop wild relatives and 77 wild edible species. Germplasm collecting resulted in 255 accessions representing 122 taxa, capturing considerable variability in crops such as cowpea (<i>Vigna unguiculata</i> (L.) Walp.), rice bean (<i>Vigna umbellata</i> (Thunb.) Ohwi &amp; H.Ohashi), perilla (<i>Perilla frutescens</i> (L.) Britton), and brinjal (<i>Solanum melongena</i> L.). Comparative analysis with previous collectings using the Jaccard similarity index revealed low-to-moderate similarity (J = 0.31), with 77 species collected exclusively in the present study, highlighting substantial additions to the ex-situ germplasm holdings. Notable observations include rare germplasm types, new distributional records, and first-time documentation of the cultivation of certain exotic crops and wild species (e.g., <i>Marsdenia jenkinsii</i> Hook.f.). The findings indicate both under-collecting in earlier efforts and ongoing changes in crop composition, including genetic erosion of traditional crops and the introduction of new crop species. The study underscores the need for multi-seasonal and targeted germplasm collecting and recollecting strategies, particularly for underrepresented vegetatively propagated crops and for crops&#xa0;or&#xa0;species within crop groups such as forages, ornamentals, agroforestry, and medicinal and aromatic plants, to strengthen conservation and enhance climate-resilient agriculture in the region.</p>

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Plant genetic resources of Southern Manipur and Northeastern Mizoram in the Indian part of Indo-Burma biodiversity hotspot: insights from a collecting expedition

  • 期刊论文

  • 发表日期：

    2026年5月21日

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  • K. Pradheep,
  • Soyimchiten Longkumer,
  • Praveen Kumar Singh,
  • S. P. Ahlawat,
  • R. S. Rathi

摘要

The Indo-Burma biodiversity hotspot is recognised as a centre of rich agrobiodiversity, yet systematic germplasm collecting across several regions remains inadequate amid threats from socio-cultural changes and climate change. A survey-cum-exploration was conducted in November 2022 across the Churachandpur and Pherzawl districts of Manipur and the Saitual district of Mizoram, covering 52 collecting sites involving 70 key informants. A total of 282 economic plant taxa belonging to 177 genera were documented, including 49 crop wild relatives and 77 wild edible species. Germplasm collecting resulted in 255 accessions representing 122 taxa, capturing considerable variability in crops such as cowpea (Vigna unguiculata (L.) Walp.), rice bean (Vigna umbellata (Thunb.) Ohwi & H.Ohashi), perilla (Perilla frutescens (L.) Britton), and brinjal (Solanum melongena L.). Comparative analysis with previous collectings using the Jaccard similarity index revealed low-to-moderate similarity (J = 0.31), with 77 species collected exclusively in the present study, highlighting substantial additions to the ex-situ germplasm holdings. Notable observations include rare germplasm types, new distributional records, and first-time documentation of the cultivation of certain exotic crops and wild species (e.g., Marsdenia jenkinsii Hook.f.). The findings indicate both under-collecting in earlier efforts and ongoing changes in crop composition, including genetic erosion of traditional crops and the introduction of new crop species. The study underscores the need for multi-seasonal and targeted germplasm collecting and recollecting strategies, particularly for underrepresented vegetatively propagated crops and for crops or species within crop groups such as forages, ornamentals, agroforestry, and medicinal and aromatic plants, to strengthen conservation and enhance climate-resilient agriculture in the region.