Development and Characterization of a Multiparent Advanced Generation Inter-Cross (MAGIC) Population of Jute (Corchorus olitorius)

IF 1.4 Q3 AGRONOMY

Agricultural Research Pub Date : 2023-05-29 DOI:10.1007/s40003-023-00653-y

Pratik Satya, Debajeet Das, Nur Alam Mandal, Avijit Kundu, Debabrata Sarkar, Chandan Sourav Kar, Jiban Mitra, Gouranga Kar, Nagendra Kumar Singh

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引用次数: 0

Abstract

Intermating of multiple founder lines is increasingly becoming a popular breeding method of choice for enhancing genetic diversity, developing mapping populations and breaking negative linkage drags. Low genetic diversity in the breeding populations is a major bottleneck for genetic improvement in jute (Corchorus olitorius L.). Here, we report the development of the first multiparent advanced generation inter-cross (MAGIC) population of jute. This MAGIC panel comprising 341 recombinant inbred lines was created by intermating 20 geographically isolated founder lines for four generations followed by six generations of inbreeding. We investigated the extent of phenotypic variabilities in four economically important traits using this permanent panel across two diverse locations. Significant trait variability, high broad-sense heritability (0.76–0.83) and transgressive segregation (up to 17.60%) revealed the potential of this MAGIC panel for genetic mapping and breeding for economic traits. Moreover, robust correlations of plant height and green biomass with bast fibre yield (r = 0.67–0.72) reinforced the importance of these two traits in selection for fibre yield in jute. While the major variance components were attributed to genotypic differences, significant non-heritable blockvariance for all the four traits indicated rather high influence of micro-environments on jute. Taken together, our study envisages the utility of the MAGIC population in jute and analogous crops constrained with a narrow gene pool.

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Jute（Corchorus olitorius）多期高级世代杂交（MAGIC）群体的发育与特征

多个建立系的杂交越来越成为一种流行的育种方法，用于增强遗传多样性、发展作图群体和打破负连锁阻力。育种群体遗传多样性低是黄麻遗传改良的主要瓶颈。本文报道了黄麻第一个多穗高级世代杂交（MAGIC）群体的发展。这个由341个重组自交系组成的MAGIC小组是通过将20个地理上孤立的建立系进行四代交配，然后进行六代近亲繁殖而创建的。我们在两个不同的地点使用这个永久面板研究了四个经济上重要性状的表型变异程度。显著的性状变异性、高广义遗传力（0.76–0.83）和越轨分离（高达17.60%）揭示了该MAGIC小组在经济性状遗传图谱和育种方面的潜力。此外，株高和绿色生物量与韧皮纤维产量（r = 0.67–0.72）强化了这两个性状在黄麻纤维产量选择中的重要性。虽然主要方差成分归因于基因型差异，但所有四个性状的显著非遗传块方差表明微环境对黄麻的影响相当大。总之，我们的研究设想了MAGIC群体在黄麻和类似作物中的效用，这些作物受到狭窄基因库的限制。

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

Agricultural Research AGRONOMY-

CiteScore

3.80

自引率

0.00%

发文量

期刊介绍： The main objective of this initiative is to promote agricultural research and development. The journal will publish high quality original research papers and critical reviews on emerging fields and concepts for providing future directions. The publications will include both applied and basic research covering the following disciplines of agricultural sciences: Genetic resources, genetics and breeding, biotechnology, physiology, biochemistry, management of biotic and abiotic stresses, and nutrition of field crops, horticultural crops, livestock and fishes; agricultural meteorology, environmental sciences, forestry and agro forestry, agronomy, soils and soil management, microbiology, water management, agricultural engineering and technology, agricultural policy, agricultural economics, food nutrition, agricultural statistics, and extension research; impact of climate change and the emerging technologies on agriculture, and the role of agricultural research and innovation for development.