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Open AccessArticle

Utilization of Molecular Marker Based Genetic Diversity Patterns in Hybrid Parents to Develop Better Forage Quality Multi-Cut Hybrids in Pearl Millet

1
Tamil Nadu Agricultural University, Coimbatore 641 003, Tamil Nadu, India
2
International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru 502 324, Hyderabad, Telangana, India
3
International Livestock Research Institute (ILRI), Patancheru 502 324, Hyderabad, Telangana, India
*
Author to whom correspondence should be addressed.
Agriculture 2019, 9(5), 97; https://doi.org/10.3390/agriculture9050097
Received: 10 April 2019 / Revised: 24 April 2019 / Accepted: 24 April 2019 / Published: 3 May 2019
(This article belongs to the Special Issue Quality and Production of Forage)
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Abstract

Genetic diversity of 130 forage-type hybrid parents of pearl millet was investigated based on multiple season data of morphological traits and two type of markers: SSRs (Simple sequence repeats) and GBS identified SNPs (Genotyping by sequencing-Single nucleotide polymorphism). Most of the seed and pollinator parents clustered into two clear-cut separate groups based on marker based genetic distance. Significant variations were found for forage related morphological traits at different cutting intervals (first and second cut) in hybrid parents. Across two cuts, crude protein (CP) varied from 11% to 15%, while in vitro organic matter digestibility (IVOMD) varied from 51% to 56%. Eighty hybrids evaluated in multi-location trial along with their parents for forage traits showed that significant heterosis can be realized for forage traits. A low but positive significant correlation found between SSR based genetic distance (GD between parents of hybrid) and heterosis for most of the forage traits indicated that SSR-based GD can be used for predicting heterosis for GFY, DFY and CP in pearl millet. An attempt was made to associate marker-based clusters with forage quality traits, to enable breeders select parents for crossing purposes in forage breeding programs. View Full-Text
Keywords: genetic diversity; markers; forage yield; crude protein; in vitro organic matter digestibility genetic diversity; markers; forage yield; crude protein; in vitro organic matter digestibility
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Ponnaiah, G.; Gupta, S.K.; Blümmel, M.; Marappa, M.; Pichaikannu, S.; Das, R.R.; Rathore, A. Utilization of Molecular Marker Based Genetic Diversity Patterns in Hybrid Parents to Develop Better Forage Quality Multi-Cut Hybrids in Pearl Millet. Agriculture 2019, 9, 97.

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