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Bücher Wissen & Bildung Englische Bücher Naturwissenschaft, Medizin, Informatik, Technik Biologie Botanik Current Options for Cereal Improvement
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Handgeprüfte Gebrauchtware
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Current Options for Cereal Improvement
(Gebundene Ausgabe, Englisch)
Optischer Zustand
Beschreibung
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. Dieses Produkt haben wir gerade leider nicht auf Lager.
Handgeprüfte Gebrauchtware
Bis zu 50 % günstiger als neu
Der Umwelt zuliebe
Technische Daten
Erscheinungsdatum
31.12.1988
Sprache
Englisch
EAN
9780792300649
Herausgeber
Springer Netherland
Serien- oder Bandtitel
Advances in Agricultural Biotechnology
Sonderedition
Nein
Seitenanzahl
228
Auflage
1
Einbandart
Gebundene Ausgabe
Einbandart Details
Fadenbindung
Transparenz & Sicherheit
Hersteller: Springer-Verlag GmbH, Tiergartenstr. 17, Heidelberg, Deutschland, 69121, ProductSafety@springernature.com, GPSR Kontakt
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