relation: http://oar.icrisat.org/7379/
title: Improvement of two traditional Basmati rice varieties for bacterial blight resistance and plant stature through morphological and marker-assisted selection
creator: Pandey, M K
creator: Shobha Rani, N
creator: Sundaram, R M
creator: Laha, G S
creator: Madhav, M S
creator: Srinivasa Rao, K
creator: Sudharshan, I
creator: Hari, Y
creator: Varaprasad, G S
creator: Subba Rao, L V
creator: Suneetha, K
creator: Sivaranjani, A K P
creator: Viraktamath, B C
subject: Genetics and Genomics
subject: Agriculture-Farming, Production, Technology, Economics
description: Bacterial blight (BB) is a major production threat to Basmati, the aromatic rice prized for its unique quality. In order to improve the BB resistance of two elite, traditional BB-susceptible Basmati varieties (Taraori Basmati and Basmati 386), we utilized the strategy of limited marker-assisted backcrossing for introgression of two major BB resistance genes, Xa21 and xa13, coupled with phenotype-based selection for improvement of their plant type and yield. Improved Samba Mahsuri, an elite high-yielding, fine-grain-type BB-resistant rice variety served as donor for BB resistance. Backcross-derived improved Basmati lines at BC1F5 possessing a single resistance gene (i.e. either Xa21 or xa13) displayed moderate resistance to BB, while lines possessing both Xa21 and xa13 showed significantly higher levels of resistance. Two-gene pyramid lines (Xa21 + xa13) possessing good grain and cooking quality similar to their respective traditional Basmati parents, short plant stature (<110 cm plant height) and higher grain yield than the recurrent parent(s) were identified and advanced. This work demonstrates the successful application of marker-assisted selection in conjunction with phenotype-based selection for targeted introgression of multiple resistance genes into traditional Basmati varieties along with improvement of their plant stature and yield.
publisher: Springer Netherlands
date: 2013
type: Article
type: PeerReviewed
format: application/pdf
language: en
identifier: http://oar.icrisat.org/7379/1/MolBreeding_31_239-246_2013.pdf
identifier:   Pandey, M K and Shobha Rani, N and Sundaram, R M and Laha, G S and Madhav, M S and Srinivasa Rao, K and Sudharshan, I and Hari, Y and Varaprasad, G S and Subba Rao, L V and Suneetha, K and Sivaranjani, A K P and Viraktamath, B C  (2013) Improvement of two traditional Basmati rice varieties for bacterial blight resistance and plant stature through morphological and marker-assisted selection.  Molecular Breeding, 31 (1).  pp. 239-246.  ISSN 1572-9788     
relation: http://dx.doi.org/10.1007/s11032-012-9779-7