MPB_2024v15n5

Molecular Plant Breeding 2024, Vol.15, No.5, 308-316 http://genbreedpublisher.com/index.php/mpb 312 deposition within the grain endosperm. Variations at this locus can lead to differences in the chalkiness of the grain, impacting its appearance and cooking quality (Gao et al., 2016). qHR for head-rice yield influences the structural integrity of rice kernels during milling. It likely affects the physical properties of the grain, such as kernel hardness and resistance to breakage, which are essential for maintaining high milling yields (Nelson et al., 2012). Figure 3 Scheme of fine mapping of YLD and PL QTLs on chromosome 3 with 24 selected RILs and 1 082 SNP markers (Adopted from Kulkarni et al., 2020) Image caption: Significant SNP changes highlighted in yellow (Adopted from Kulkarni et al., 2020) 4.3 Case studies Several studies have demonstrated the practical applications of these QTLs in rice breeding programs. In a study involving recombinant inbred lines derived from Gang46B and K1075, the qGL5 and qPGWC-5 QTLs were identified and shown to significantly affect grain length, width, and chalkiness. These findings have been utilized to improve grain appearance quality in rice breeding programs (Gao et al., 2016). The qHR QTL was mapped in a population derived from a cross between L-204 and 01Y110. This QTL has been used to enhance

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