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|Advisor:||Singh, P. K.|
|Title:||Identification of aromatic, semi-dwarf and Photo insensitive segregants of rice through Marker assisted selection|
|Publisher:||Department of Plant Breeding & Genetics, BAU, Sabour Year: 2017|
|Keywords:||Aroma • 2-acetyl-1-pyrroline • badh2 gene • Foreground selection • Frequency distribution,. • Marker assisted selection, • sd1 gene • Rice.|
|Abstract:||Rice is the most staple food grain crop of India. Growing rice is an inevitable part in more than half of the world population who depends on it as their staple food. Rice consumers all over the world have strong preferences for the aromatic rice, it commands premium price in national as well as international market, have superior nutritional value and better amino acid profiles. The aroma is mainly due to accumulation of a compound, 2-acetyl-pyrroline (2AP), the main aromatic compound for popcorn like fragrance in all aromatic rice. Katarni rice is a famous aromatic landrace of Bihar having a problem of lodging and photosensitivity resulting in its low productivity and restricted cultivation. Marker assisted selection was employed to select semi-dwarf and aromatic progenies in the BC1F2 and F3 population in a cross of Katarni with a rice variety Rajendra Sweta which was used as donar parent for photo insensitivity and semi-dwarf trait. 51 plants selected on the basis of 1.7% KOH sensory test for aroma in BC1F2 population whereas 31 plants were selected in F3 population. 50 plants selected on the basis of PCR amplification of badh2 gene specific primer in BC1F2 population whereas 25 plants in F3 population. Finally 49 plants of BC1F2 and 25 plants of F3 population selected on the basis of foreground selection of badh2 & sd1. Aroma is the monogenic recessive to non-aromatic .The segregation ratio of non-aromatic to aromatic plants was 3:1 F2 plants confirming the monogenic inheritance of aroma. The selected plants will be further evaluated in next generation for homozygous plant for earliness and semi-dwarf trait.|
|Appears in Collections:||Theses|
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