Author: M. Maluszynski
Publisher: Springer Science & Business Media
ISBN: 9780792300649
Category : Science
Languages : en
Pages : 234
Book Description
China was the first country to use cytoplasmic male sterility to develop hybrid rice for commercial use in 1973. In 1986 more than 8 million hectares of hybrid rice were planted in China, which is one fourth of the total rice area and produces one third of the total rice in the country. Hybrids usually out yield the leading commercial varieties by -20-30%, giving an average yield advantage of 1 to 1. 5 t/ha, because of their better morphological traits, higher physiological efficiency, better resistance to major diseases and insects, and wide adaptability to various agro-ecological stresses. IMPROVEMENT OF HYBRID RICE A. Mutation techniques Almost all of the cultivated F1 rice hybrids in China are developed from cytoplasmic male sterile and restorer lines. According to surveys made in recent years, more than 30 sources of cytoplasmic male sterility in rice can be identified, among which only six are being commercially used (Table 1). Wild rice with aborted pollen (WA) cytosterility system is the most popular one in use to develop male sterile lines (MS line) in China. The main technique available for developing stable MS lines is sUbstitution backcrossing of the genome of one species into alien cytoplasm of another. Sufficient backcrosses are required to eliminate all nuclear genes derived from the cytoplasm donor species. A number of studies have shown that using interspecies crosses, such as the cross of wild rice (Q. perennis, Q. sativa, f.
Current Options for Cereal Improvement
Author: M. Maluszynski
Publisher: Springer Science & Business Media
ISBN: 9780792300649
Category : Science
Languages : en
Pages : 234
Book Description
China was the first country to use cytoplasmic male sterility to develop hybrid rice for commercial use in 1973. In 1986 more than 8 million hectares of hybrid rice were planted in China, which is one fourth of the total rice area and produces one third of the total rice in the country. Hybrids usually out yield the leading commercial varieties by -20-30%, giving an average yield advantage of 1 to 1. 5 t/ha, because of their better morphological traits, higher physiological efficiency, better resistance to major diseases and insects, and wide adaptability to various agro-ecological stresses. IMPROVEMENT OF HYBRID RICE A. Mutation techniques Almost all of the cultivated F1 rice hybrids in China are developed from cytoplasmic male sterile and restorer lines. According to surveys made in recent years, more than 30 sources of cytoplasmic male sterility in rice can be identified, among which only six are being commercially used (Table 1). Wild rice with aborted pollen (WA) cytosterility system is the most popular one in use to develop male sterile lines (MS line) in China. The main technique available for developing stable MS lines is sUbstitution backcrossing of the genome of one species into alien cytoplasm of another. Sufficient backcrosses are required to eliminate all nuclear genes derived from the cytoplasm donor species. A number of studies have shown that using interspecies crosses, such as the cross of wild rice (Q. perennis, Q. sativa, f.
Publisher: Springer Science & Business Media
ISBN: 9780792300649
Category : Science
Languages : en
Pages : 234
Book Description
China was the first country to use cytoplasmic male sterility to develop hybrid rice for commercial use in 1973. In 1986 more than 8 million hectares of hybrid rice were planted in China, which is one fourth of the total rice area and produces one third of the total rice in the country. Hybrids usually out yield the leading commercial varieties by -20-30%, giving an average yield advantage of 1 to 1. 5 t/ha, because of their better morphological traits, higher physiological efficiency, better resistance to major diseases and insects, and wide adaptability to various agro-ecological stresses. IMPROVEMENT OF HYBRID RICE A. Mutation techniques Almost all of the cultivated F1 rice hybrids in China are developed from cytoplasmic male sterile and restorer lines. According to surveys made in recent years, more than 30 sources of cytoplasmic male sterility in rice can be identified, among which only six are being commercially used (Table 1). Wild rice with aborted pollen (WA) cytosterility system is the most popular one in use to develop male sterile lines (MS line) in China. The main technique available for developing stable MS lines is sUbstitution backcrossing of the genome of one species into alien cytoplasm of another. Sufficient backcrosses are required to eliminate all nuclear genes derived from the cytoplasm donor species. A number of studies have shown that using interspecies crosses, such as the cross of wild rice (Q. perennis, Q. sativa, f.
Use of Induced Mutations in Connection with Haploids and Heterosis in Cereals
Current Options for Cereal Improvement
Author: Mirosław Małuszyński
Publisher:
ISBN:
Category :
Languages : en
Pages : 214
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 214
Book Description
Proceedings of the Second FAO/IAEA Research Coordination Meeting on Use of Induced Mutations in Connection with Haploids and Heterosis in Cereals
Author: Research Co-ordination Meeting on Use of Induced Mutations in Connection with Haploids and Heterosis in Cereals. 2, 1988, Katowice
Publisher:
ISBN:
Category :
Languages : en
Pages : 275
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 275
Book Description
Use of Induced Mutations in Connection with Haploids and Heterosis in Cereals
Author: Food and Agriculture Organization of the United Nations
Publisher:
ISBN:
Category :
Languages : en
Pages : 275
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 275
Book Description
Proceedings of the Second FAO/IAEA Research Co-ordination Meeting on Use of Induced Mutations in Connection with Haploids and Heterosis in Cereals Held at the Dept. of Genetics, Silesian University, Katowice, Poland from 25 to 29 July, 1988
Author: Zoltán Barabás
Publisher:
ISBN:
Category : Grain
Languages : en
Pages : 275
Book Description
Publisher:
ISBN:
Category : Grain
Languages : en
Pages : 275
Book Description
Proceedings of the FAO IAEA Research Co Ordination Meeting on Use of Induced Mutations in Connection with Haploids and Heterosis in Cereals // Food and Agriculture Organization. United Nations ; 1
Report of the Third FAO/IAEA Research Co-ordination Meeting on Use of Induced Mutations in Connection with Haploids and Heterosis in Cereals
Author: Food and Agriculture Organization of the United Nations
Publisher:
ISBN:
Category : Grain
Languages : en
Pages : 136
Book Description
Publisher:
ISBN:
Category : Grain
Languages : en
Pages : 136
Book Description
Preharvest Field sprouting in Cereals
Author: N.F. Derera
Publisher: CRC Press
ISBN: 1351092871
Category : Technology & Engineering
Languages : en
Pages : 428
Book Description
This book summarizes the research done on preharvest sprouting during recent years. Naturally, whenever needed, earlier findings are also considered. Both publishers and the authors hope that his publication will provide researchers and students with a convenient source of up-to-date information in this expanding field.
Publisher: CRC Press
ISBN: 1351092871
Category : Technology & Engineering
Languages : en
Pages : 428
Book Description
This book summarizes the research done on preharvest sprouting during recent years. Naturally, whenever needed, earlier findings are also considered. Both publishers and the authors hope that his publication will provide researchers and students with a convenient source of up-to-date information in this expanding field.