Molecular characterization inheritance and Validation of markers linked to aroma in rice (Oryza sativa L.) under aerobic condition
KrishiKosh
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Title |
Molecular characterization inheritance and Validation of markers linked to aroma in rice (Oryza sativa L.) under aerobic condition
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Creator |
Kalmeshwer, gouda Patil
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Contributor |
R. S, Kulkarni
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Subject |
grain, yields, planting, developmental stages, rice, genetics, genotypes, biological phenomena, crossing over, productivity
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Description |
Rice (Oryza sativa L.) has a renowned relationship with the humans since ages. India produces some of the best quality aromatic rices in the world, which includes Basmati type and non-Basmati, short and medium grained type. Most of the work on aromatic rice is concentrated mainly on basmati rice while, very limited organized efforts have been made on the latter. Characterization of 24 aromatic rice genotypes revealed, none of the genotypes were superior in respect of all the traits studied. Nevertheless, the genotype IET 18981 exhibited higher grain yield per plant while, Kalanamak and K 44-1 were rich in iron and zinc content. Correlation studies indicated highly significant and positive correlation of grain yield with number of productive tillers per plant and number of tillers per plant. The inter-cluster distance was not consistent with the geographic distribution of varieties. The varieties belonging to diverse ecological regions clustered together whereas, genotypes of the same region have entered widely into separate groups. Contribution of each character towards genetic divergence indicated that grain yield per plant contributed maximum towards the genetic divergence. The results of molecular characterization revealed presence of variation between basmati and non-Basmati genotypes for aroma. Most of the Basmati genotypes were grouped to one cluster while, all the local non-basmati genotypes were grouped to another cluster. The results of evaluation of F2 populations of three crosses developed viz., IRRI 38 x Jeerige sanna, BI 33 x Jeerige sanna and Azucena x Moro mutant, indicated higher PCV, GCV, heritability and genetic advance as per cent of mean for most of the characters. The results of studies on inheritance pattern of aroma in all the three crosses indicated that, the trait is governed by single recessive gene (3 non-aromatic: 1 aromatic). The results of single-marker analysis revealed the association of OPC 07 and RM 264 markers with aroma which explained 34 and 44 per cent of variation in the respectively. |
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Date |
2016-05-26T14:03:58Z
2016-05-26T14:03:58Z 2008-10-20 |
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Type |
Thesis
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Identifier |
Th-9222
http://krishikosh.egranth.ac.in/handle/1/66343 |
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Language |
en
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Format |
application/pdf
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Publisher |
University of Agricultural Sciences, Bengaluru
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