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Physiological, Qualitative and Molecular Markers Based Evaluation of Mango Cultivars

机译:基于生理,定性和分子标记的芒果品种评估

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摘要

In this investigation of mango cultivars, five physiological parameters, six quality parameters and three molecular markers (RAPD, ISSR and SSR) were employed to measure the discriminatory power of marker and to select lines that can be used as potential parents in a future breeding program. Three principal components were extracted (PC1, PC2 and PC3) from both physiological and qualitative characters showed that all physiological characters such as fruit weight, fruit volume, peel weight, pulp weight and stone weight had maximum contribution (83.28%) to total variance. It was also observed that cultivar Neelkrit could be utilized as a good parent for the breeding program, since it contained high amount of TSS (16.15%) and ascorbic acid (5.11%), while Malgoa and Totapuri could be used as a good candidate for the improvement regarding physiological traits. From the study, it was concluded that Malgoa and Totapuri showed maximum diversity from the rest of the cultivars. SSR marker was found to be a good choice for estimating variability in mango as it revealed 71.86 per cent polymorphism and could act as an important molecular flag for selecting target trait and development of mapping population in mango.
机译:在这项对芒果品种的调查中,采用了五个生理参数,六个质量参数和三个分子标记(RAPD,ISSR和SSR)来测量标记的歧视力并选择可以在将来的育种计划中用作潜在亲本的品系。从生理和定性特征中提取了三个主要成分(PC1,PC2和PC3),结果表明,所有生理特征(如水果重量,水果体积,果皮重量,果肉重量和石重)对总方差的贡献最大(83.28%)。还观察到,Neelkrit品种可以作为育种计划的良好亲本,因为它含有大量的TSS(16.15%)和抗坏血酸(5.11%),而Malgoa和Totapuri可以作为优良的候选品种。生理特性的改善。从研究中可以得出结论,马尔戈亚和托塔普里(Totapuri)与其他品种相比具有最大的多样性。 SSR标记显示出71.86%的多态性,是估计芒果变异性的好选择,并且可以作为选择芒果的目标性状和绘制种群发展的重要分子标记。

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