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Genetic diversity analysis reveals importance of Green Revolution Gene (Sd1 Locus) for drought tolerance in rice

By: Vikram, P.
Contributor(s): Kadam, S | Singh, B.P | You Jin lee | Jitendra Kumar Pal | Singh, S | Singh, O.N | Mallikarjuna Swamy, B.P | Thiyagarajan, K | Singh, N.K | Sukhwinder-Singh.
Material type: materialTypeLabelArticlePublisher: India : Springer, 2016Subject(s): Green Revolution AGROVOCOnline resources: Access only for CIMMYT Staff In: Agricultural Research v. 5, no. 1, p. 1-12Summary: Genetic diversity analysis based on genome-wide single-nucleotide polymorphism (SNP) assay of a set of Indian rice cultivars including modern high-yielding varieties and landraces revealed two broad groups, one with “Aus” and the other with “Indica” cultivars. Marker analysis of these genotypes was carried out for three major drought tolerance QTLs as well as green revolution gene, sd1. This gene collocates with a drought QTL, qDTY 1.1 . The well-known drought-tolerant landraces or traditional varieties had the “tall” allele of the sd1 gene, indicating the possibility of close linkage, pleiotropy or both associated with this gene. Profiling of rice genotypes investigated in the present study with drought QTL markers, genome-wide SNPs, and sd1 gene reveals the importance of using multiple genes rather focusing on any single major QTL/gene for drought tolerance. Our results suggested that rice genetic improvement for rain-fed areas require enhanced use of pre-green revolution varieties.
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Article CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Staff Publications Collection Available
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Genetic diversity analysis based on genome-wide single-nucleotide polymorphism (SNP) assay of a set of Indian rice cultivars including modern high-yielding varieties and landraces revealed two broad groups, one with “Aus” and the other with “Indica” cultivars. Marker analysis of these genotypes was carried out for three major drought tolerance QTLs as well as green revolution gene, sd1. This gene collocates with a drought QTL, qDTY 1.1 . The well-known drought-tolerant landraces or traditional varieties had the “tall” allele of the sd1 gene, indicating the possibility of close linkage, pleiotropy or both associated with this gene. Profiling of rice genotypes investigated in the present study with drought QTL markers, genome-wide SNPs, and sd1 gene reveals the importance of using multiple genes rather focusing on any single major QTL/gene for drought tolerance. Our results suggested that rice genetic improvement for rain-fed areas require enhanced use of pre-green revolution varieties.

Genetic Resources Program

Text in english

CIMMYT Informa : February 23, 2016.

I1705725

INT3098

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