Seedcoat Color and Dormancy in Triticum Aestivum L. PDF Download
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Author: Russell D. Freed
Publisher:
ISBN:
Category : Dormancy in plants
Languages : en
Pages : 150
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Book Description
Author: Russell D. Freed
Publisher:
ISBN:
Category : Dormancy in plants
Languages : en
Pages : 150
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Book Description
Author: Russell D. Freed
Publisher:
ISBN:
Category :
Languages : en
Pages : 116
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Book Description
Author: Russell D. Freed
Publisher:
ISBN:
Category : Wheat
Languages : en
Pages : 116
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Author: Bahman Ehdaie
Publisher:
ISBN:
Category : Germination
Languages : en
Pages : 108
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Book Description
Author: Judith Rebecca Rathjen
Publisher:
ISBN:
Category : Wheat
Languages : en
Pages : 378
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Book Description
Pre-harvest sprouting (PHS) is an important economic problem which affects a significant proportion of the Australian wheat crop through quality downgrading. Grain dormancy is the most effective means of overcoming germination in the wheat spikelet at harvest maturity. It has been a consistent observation over a long period of time that dormant red-grained wheat genotypes are almost more dormant than dormant white-grained genotypes. In white-grained wheat, there are two factors which contribute to dormancy, embryo sensitivity to abscisic acid (ABA) and an interacting and unknown seed coat factor. The proposed dormancy model is that complete dormancy can only be achieved with the coordinate expression of these two factors. This primary objective of this project was to determine the role of this putative seed coat factor in grain dormancy of white-grained wheat."--Abstract.
Author: Chengdao Li
Publisher: Frontiers Media SA
ISBN: 2889457621
Category :
Languages : en
Pages : 235
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Book Description
Pre-harvest sprouting (PHS) and late-maturity alpha-amylase (LMA) are two of the biggest grain quality defects that grain growers encounter. About 50 percent of the global wheat crop is affected by pre-harvest sprouting to various degrees. Pre-harvest sprouting is a genetically-based quality defect and results in the presence of alpha-amylase in otherwise sound mature grain. It can range from perhaps undetectable to severe damage on grain and is measured by the falling numbers or alpha-amylase activity. This is an international issue, with sprouting damage lowering the value of crops to growers, seed and grain merchants, millers, maltsters, bakers, other processors, and ultimately the consumer. As such it has attracted attention from researchers in many biological and non-biological disciplines. The 13th International Symposium on Pre-Harvest Sprouting in Cereals was held 18-20 September, 2016 in Perth to discuss current findings of grain physiology, genetic pathways, trait expression and screening methods related to pre-harvest sprouting and LMA. This event followed the previous symposium in 2012 in Canada.
Author: Feroza Nisar Khan
Publisher:
ISBN:
Category :
Languages : en
Pages : 11
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Author: Mian Abdur Rehman Arif
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
This study was undertaken to map quantitative trait loci (QTLs) and marker trait associations (MTAs) controlling seed longevity and dormancy in wheat using one bi-parental and two association mapping populations. QTL analysis of bi-parental 'International Triticeae Mapping Initiative' population reproduced in two different seasons resulted in the identification of one major and nine minor QTLs for seed longevity. There was one major QTL for dormancy observed on chromosome 4AL. The location of this QTL does not match with any of the longevity QTLs. One set of 96 winter wheat accessions (advanced gemplasm collection) and one set of 183 accessions consisting of a mixture of spring and winter wheat (genebank collection) revealed 73 and 340 MTAs for seed longevity, respectively. Of the 340 MTAs, 134 MTAs were observed after long term cold storage but the others after experimental ageing in genebank collection. The associations were distributed over all the wheat chromosomes except 4D which was not covered with markers. Results obtained after long term cold storage and experimental ageing did match only to some extent in this study which could be due to different quality of seeds produced during different seasons. However, it also can be proposed that different mechanisms are involved during deterioration in cold storage over long periods and decaying during artificial ageing treatments. For dormancy, there were 68 and 118 MTAs identified in the advanced germplasm collection and genebank collection, respectively, in addition to one major QTL on chromosome 4A in the ITMI population. Similarly, pre-harvest sprouting revealed 32 and 193 MTAs in case of advanced germplasm collection and genebank accessions, respectively. Co-linearity was found among wheat, rice and barley for loci influencing dormancy and PHS.
Author: Kent Bradford
Publisher: John Wiley & Sons
ISBN: 1405173270
Category : Science
Languages : en
Pages : 392
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Book Description
The formation, dispersal and germination of seeds are crucial stages in the life cycles of gymnosperm and angiosperm plants. The unique properties of seeds, particularly their tolerance to desiccation, their mobility, and their ability to schedule their germination to coincide with times when environmental conditions are favorable to their survival as seedlings, have no doubt contributed significantly to the success of seed-bearing plants. Humans are also dependent upon seeds, which constitute the majority of the world’s staple foods (e.g., cereals and legumes). Seeds are an excellent system for studying fundamental developmental processes in plant biology, as they develop from a single fertilized zygote into an embryo and endosperm, in association with the surrounding maternal tissues. As genetic and molecular approaches have become increasingly powerful tools for biological research, seeds have become an attractive system in which to study a wide array of metabolic processes and regulatory systems. Seed Development, Dormancy and Germination provides a comprehensive overview of seed biology from the point of view of the developmental and regulatory processes that are involved in the transition from a developing seed through dormancy and into germination and seedling growth. It examines the complexity of the environmental, physiological, molecular and genetic interactions that occur through the life cycle of seeds, along with the concepts and approaches used to analyze seed dormancy and germination behavior. It also identifies the current challenges and remaining questions for future research. The book is directed at plant developmental biologists, geneticists, plant breeders, seed biologists and graduate students.
Author: Caleb Carbine Squires
Publisher:
ISBN:
Category : Wheat
Languages : en
Pages :
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