Adaptation in Plant Breeding: Selected Papers from the XIV by R. W. Allard (auth.), Peter M. A. Tigerstedt (eds.) PDF

By R. W. Allard (auth.), Peter M. A. Tigerstedt (eds.)

ISBN-10: 9048147085

ISBN-13: 9789048147083

ISBN-10: 9401588066

ISBN-13: 9789401588065

Plant edition is a basic approach in plant breeding. It was once the 1st criterion within the preliminary domestication of vegetation millions of years in the past. Adaptedness is mostly a quantitative advanced characteristic of the plant, related to many qualities, a lot of that are quantitative. edition to stresses like chilly, drought or ailments are one of the so much important difficulties in an international grappling with international nutrients safety. glossy plant breeding, in response to mendelian genetics, has made plant development more beneficial and extra specific and selective. Molecular genetics and genetic engineering has significantly elevated this selectivity all the way down to unmarried genes affecting unmarried qualities. The time has come whilst plant breeding potency could cause lack of genetic assets and variation. In those court cases an attempt is made to merge glossy plant breeding potency with ecological facets of plant breeding, mirrored in model. it really is was hoping that this merger ends up in extra sustainable use of genetic assets and actual environments.
The booklet relies on 10 keynotes addressing a large spectrum of issues on the topic of version. moreover every one topic is extra elaborated in as much as 3 case experiences on specific plant species or teams of crops. The keynotes do actually overlap to a point and there are articles during this quantity that doubtless contradict one another, a typical point in complicated fields of study. The willing reader may perhaps finish that, in a global the place climates and environments are below non-stop swap and the place human society is a growing number of polarized right into a built and a constructing half, variation of our cultivated vegetation has various constraints on yields reckoning on ecology, and certainly economy.

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Extra info for Adaptation in Plant Breeding: Selected Papers from the XIV EUCARPIA Congress on Adaptation in Plant Breeding held at Jyvaskyla, Sweden from July 31 to August 4, 1995

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Waugh, J. P. Foster, E. J. Abbott & W. Powell, 1992. Grain isozyme and ribosomal DNA variability in Hordeum spontaneum populations from Israel. Theor Appl Genet 84: 313-322. P. B. Holl, 1992. Influence of soil biota on Douglasfir (Pseudotsuga menziesii) seedling growth: the role of rhizosphere bacteria. Can J Bot 70: 1025-1031. P. M. Nelson, 1990. Field and laboratory studies of Triticum aestivum L. inoculated with co-existent growthpromoting Bacillus strains. Soil Bioi Biochem 22: 789-795. , R.

Thus, Shonnard & Gepts (1994) pointed out that heat tolerance during flower bud formation and pod filling in beans (Phaseolus vulgaris) displayed continuous variation, indicating quantitative inheritance, and also cytoplasmic effects including interactions of cytoplasmic with nuclear genes. But they pointed out (see references in Shonnard & Gepts, 1994) that previous studies on beans had reported that heat tolerance at pod set was due to one or two epistatic genes depending upon accessions, or to polygenic quantitative inheritance.

However, the role of major genes in adaptation has been claimed again recently (Macnair, 1991; Orr & Coyne, 1992) it being pointed out that although the polygenic view of adaptation may be correct, it is not strongly supported by evidence, and that major genes are particularly important in the adaptation to rapid changes in the environment (Macnair, 1991). In such situations, populations must adapt rapidly or become locally extinct, or fail to colonize. Another major argument against the adaptive role of molecular polymorph isms is that, although significant correlations suggest adaptedness, they cannot establish it unequivocally: correlations do not prove causality by themselves.

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Adaptation in Plant Breeding: Selected Papers from the XIV EUCARPIA Congress on Adaptation in Plant Breeding held at Jyvaskyla, Sweden from July 31 to August 4, 1995 by R. W. Allard (auth.), Peter M. A. Tigerstedt (eds.)


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