Unveiling the genetic potential of Terminalia chebula Retz. accessions from North-East and South India: A morphometric analysis

IF 2.7 Q1 FORESTRY

Trees, Forests and People Pub Date : 2024-09-04 DOI:10.1016/j.tfp.2024.100669

Shobith Murthy Mahadeva , Umesh Kanna Subramani , Parthiban Kalappan Thangamuthu , Devanand Pachanoor Subbian , Radha Palaniswamy , Senthilraja Kandasamy , Venkatesan Subramanian

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Abstract

This study examined genetic diversity and growth performance of thirty Terminalia chebula genotypes from various regions of India. Seedlings were evaluated for growth attributes over 180 days after transplanting (DAT). Significant variations were observed across accessions for traits like shoot length, root length, collar diameter and volume. MHTC 04 showed superior performance, with maximum shoot length (36.23 cm) and root length (38.47 cm) at 180 DAT. KETC 05 exhibited the highest collar diameter (1.08 cm) and volume index (39.35) at 180 DAT. The genetic analysis revealed low to moderate PCV and GCV for most traits. Volume index showed the highest PCV (47.31 %) and GCV (47.23 %). High heritability (>95 %) was observed for several traits viz., root length, collar diameter and volume index. Path coefficient analysis identified collar diameter and shoot fresh weight as having the strongest positive direct effects on quality index. Cluster analysis grouped 30 genotypes into 10 clusters with cluster II being the largest (8 progenies). Quality index contributed the maximum (59.30 %) towards divergence followed by shoot dry weight (13.94 %) and volume index (8.28 %). This study identified promising genotypes and important traits for T. chebula improvement programmes, highlighting the potential for selective breeding to enhance the seedling quality and growth performance.

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揭示来自印度东北部和南部的 Terminalia chebula Retz：形态计量分析

本研究考察了来自印度不同地区的30种Terminalia chebula基因型的遗传多样性和生长表现。对幼苗移植后180天（DAT）的生长特性进行了评估。观察到不同品种在芽长、根长、颈圈直径和体积等性状上存在显著差异。MHTC 04 表现优异，180DAT时芽长（36.23 厘米）和根长（38.47 厘米）最大。KETC 05 在 180 DAT 时表现出最高的颈圈直径（1.08 厘米）和体积指数（39.35）。遗传分析表明，大多数性状的 PCV 和 GCV 为中低水平。体积指数显示出最高的 PCV（47.31 %）和 GCV（47.23 %）。根长、颈圈直径和体积指数等几个性状的遗传率较高（95%）。路径系数分析表明，颈圈直径和嫩枝鲜重对质量指标有最强的正向直接影响。聚类分析将 30 个基因型分为 10 个聚类，其中聚类 II 最大（8 个后代）。品质指数对差异的影响最大（59.30%），其次是嫩枝干重（13.94%）和体积指数（8.28%）。这项研究为星云草的改良计划确定了有希望的基因型和重要性状，突出了选择性育种在提高幼苗质量和生长性能方面的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Trees, Forests and People Economics, Econometrics and Finance-Economics, Econometrics and Finance (miscellaneous)

CiteScore

4.30

自引率

7.40%

发文量

172

审稿时长

56 days