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Titolo:
A MORICANDIA-ARVENSIS - BASED CYTOPLASMIC MALE-STERILITY AND FERTILITY RESTORATION SYSTEM IN BRASSICA-JUNCEA
Autore:
PRAKASH S; KIRTI PB; BHAT SR; GAIKWAD K; KUMAR VD; CHOPRA VL;
Indirizzi:
INDIAN AGR RES INST,NATL RES CTR PLANT BIOTECHNOL NEW DELHI 110012 INDIA INDIAN AGR RES INST,NATL RES CTR PLANT BIOTECHNOL NEW DELHI 110012 INDIA
Titolo Testata:
Theoretical and Applied Genetics
fascicolo: 3, volume: 97, anno: 1998,
pagine: 488 - 492
SICI:
0040-5752(1998)97:3<488:AM-BCM>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
ALLOPLASMIC WHEAT; OVARY CULTURE; NAPUS L; HYBRIDIZATION; CHLOROPLAST; CHROMOSOMES; GENOME;
Keywords:
CYTOPLASMIC MALE STERILITY; FERTILITY RESTORATION; MORICANDIA ARVENSIS; BRASSICA JUNCEA; PROTOPLAST FUSION; SOMATIC HYBRIDS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
25
Recensione:
Indirizzi per estratti:
Citazione:
S. Prakash et al., "A MORICANDIA-ARVENSIS - BASED CYTOPLASMIC MALE-STERILITY AND FERTILITY RESTORATION SYSTEM IN BRASSICA-JUNCEA", Theoretical and Applied Genetics, 97(3), 1998, pp. 488-492

Abstract

A cytoplasmic male-sterility system has been developed in mustard (Brassica juncea) following repeated backcrossings of the somatic hybrid Moricandia arvensis (2n = 28, MM) B. juncea (2n = 36, AABB), carrying mitochondria and chloroplasts from M. arvensis, to Brassica juncea. Cytoplasmic male-sterile (CMS) plants are similar to normal B. juncea; however, the leaves exhibit severe chlorosis resulting in delayed flowering. Flowers are normal with slender, non-dehiscent anthers and excellent nectaries. CMS plants show regular meiosis with pollen degeneration occurring during microsporogenesis. Female fertility was normal. Genetic information for fertility restoration was introgressed followingthe development of a M. arvensis monosomic addition line on CMS B. juncea. The additional chromosome paired allosyndetically with one of the B. juncea bivalents and allowed introgression. The putative restorerplant also exhibited severe chlorosis similar to CMS plants but possessed 89% and 73% pollen and seed fertility, respectively, which subsequently increased to 96% and 87% in the selfed progeny. The progeny of the cross of CMS line with the restorer line MJR-15, segregated into 1fertile: 1 sterile. The CMS (Moricandia) B. juncea, the restorer (MJR-15), and fertility restored Fl plants possess similar cytoplasmic organellar genomes as revealed by 'Southern' analysis.

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Documento generato il 03/12/20 alle ore 15:17:40