Variations in Expressivity for Self- and Cross-incompatibility in Almond (Prunus Dulcis) PDF Download
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Author: Richie Eve G. Ragas
Publisher:
ISBN: 9781267759863
Category :
Languages : en
Pages :
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Book Description
'Jeffries' is almost identical to 'Nonpareil' in tree and nut characteristics, except for unusually high productivity in certain crossing situations. Field data supports a unilateral incompatibility between 'Jeffries' and cultivars carrying the S haplotype and, consequently, suggests that the 'Jeffries' mutant expresses only one effective S-allele (S) of the putative 'Nonpareil' parent genotype (S--S8). Simple sequence repeats (SSRs) were used to assess parent-progeny relationships to clarify the true identity of 'Jeffries'. Two of nine SSR alleles tested are distinct between 'Jeffries' and 'Nonpareil', making a seedling origin for 'Jeffries' plausible. Moreover, physiological changes reportedly controlled by independently inherited, multiple genes and a significant shift for quantitative traits located on multiple, independent linkage groups provide compelling evidences that 'Jeffries' is not the result of a single mutation of 'Nonpareil'. Genotyping the 'Jeffries' S-alleles showed a band that appeared to be S-- on the gel. Its corresponding sequences strongly matched the published S-- sequences available in NCBI database. The same was true for the S8 allele. NCBI returned a hit that is 93% similar to a previously published S8-haplotype sequence. Results suggest that the genotype of 'Jeffries' is S--S8 with S---RNase present in a very low efficacy. Seed-set data taken from a large sampling of almond cultivars, including multiple cross-incompatibility groups, show a wide variability for seed sets that do not strictly follow the groupings previously established for cross-incompatibility groups. Results indicate that considerable variability in seed-sets is common in established self- and cross-incompatibility groups as well as self- and cross-compatibility groups, indicating that other genes in addition to the major S-gene are involved.
Author: Richie Eve G. Ragas
Publisher:
ISBN: 9781267759863
Category :
Languages : en
Pages :
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Book Description
'Jeffries' is almost identical to 'Nonpareil' in tree and nut characteristics, except for unusually high productivity in certain crossing situations. Field data supports a unilateral incompatibility between 'Jeffries' and cultivars carrying the S haplotype and, consequently, suggests that the 'Jeffries' mutant expresses only one effective S-allele (S) of the putative 'Nonpareil' parent genotype (S--S8). Simple sequence repeats (SSRs) were used to assess parent-progeny relationships to clarify the true identity of 'Jeffries'. Two of nine SSR alleles tested are distinct between 'Jeffries' and 'Nonpareil', making a seedling origin for 'Jeffries' plausible. Moreover, physiological changes reportedly controlled by independently inherited, multiple genes and a significant shift for quantitative traits located on multiple, independent linkage groups provide compelling evidences that 'Jeffries' is not the result of a single mutation of 'Nonpareil'. Genotyping the 'Jeffries' S-alleles showed a band that appeared to be S-- on the gel. Its corresponding sequences strongly matched the published S-- sequences available in NCBI database. The same was true for the S8 allele. NCBI returned a hit that is 93% similar to a previously published S8-haplotype sequence. Results suggest that the genotype of 'Jeffries' is S--S8 with S---RNase present in a very low efficacy. Seed-set data taken from a large sampling of almond cultivars, including multiple cross-incompatibility groups, show a wide variability for seed sets that do not strictly follow the groupings previously established for cross-incompatibility groups. Results indicate that considerable variability in seed-sets is common in established self- and cross-incompatibility groups as well as self- and cross-compatibility groups, indicating that other genes in addition to the major S-gene are involved.
Author: Dreux de Nettancourt
Publisher: Springer Science & Business Media
ISBN: 3662045028
Category : Science
Languages : en
Pages : 347
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Book Description
Advances in plant cell molecular biology have considerably increased our understanding of pollen-pistil barriers, particularly those operated by incompatibility mechanisms, and, at the same time, demonstrated the complexity and diversity of rejection systems once considered to be relatively simple. This book reviews the impressive knowledge acquired in the last century on the biology, particularly the inheritance and population genetics of self-incompatibility, and presents the new approaches to the study of the structure, function and evolution of incompatibility alleles and the analysis of cell-cell recognition and pollen rejection. The different methods now available for transforming the breeding behaviour of higher plants are also discussed.
Author: Kristi K. Barckley
Publisher:
ISBN:
Category :
Languages : en
Pages : 126
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Book Description
Author: Rafel Socias i Company
Publisher: CABI
ISBN: 1780643543
Category : Science
Languages : en
Pages : 514
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Book Description
This book provides a comprehensive overview of almond growing from a scientific and horticultural perspective, covering botany, production, processing and industrial uses. Almonds are an important crop; they are highly regarded for their flavour, nutritional properties and culinary uses, and almond oil is used widely in food, cosmetic and pharmaceutical production. They are easy to transport and have long storability, facilitating global dissemination. Demand is constantly increasing and global production has more than doubled in the last 20 years. Authored by an international team of experts and presented in full colour throughout, this book is an essential resource for academic researchers and extension workers, as well as growers, orchard managers and industry personnel.
Author: Raquel Sánchez-Pérez
Publisher: Springer Nature
ISBN: 3030303020
Category : Science
Languages : en
Pages : 181
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Book Description
This book brings together the latest information on almond genomics and transcriptomics, with a particular focus on cutting-edge findings, tools, and strategies employed in genome sequencing and analysis with regard to the most important agronomic traits. Cultivated almond [(Prunus dulcis (Miller) D. A. Webb, syn. Prunus amygdalus Batsch., Amygdalus communis L., Amygdalus dulcis Mill.)] is a tree crop producing seeds of great economic interest, and adapted to hot and dry climates. Domesticated in Southeast Asia, its small diploid genome and phenotypic diversity make it an ideal model to complement genomics studies on peach, generally considered to be the reference Prunus species. Both represent consanguineous species that evolved in two distinct environments: warmer and more humid in the case of peach, and colder and xerophytic for almond. The advent of affordable whole-genome sequencing, in combination with existing Prunus functional genomics data, has now made it possible to leverage the novel diversity found in almond, providing an unmatched resource for the genetic improvement of this species.
Author: Hitoshi Sawada
Publisher: Springer
ISBN: 4431545891
Category : Science
Languages : en
Pages : 463
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Book Description
This book contains the proceedings of the International Symposium on the Mechanisms of Sexual Reproduction in Animals and Plants, where many plant and animal reproductive biologists gathered to discuss their recent progress in investigating the shared mechanisms and factors involved in sexual reproduction. This now is the first book that reviews recent progress in almost all fields of plant and animal fertilization. It was recently reported that the self-sterile mechanism of a hermaphroditic marine invertebrate (ascidian) is very similar to the self-incompatibility system in flowering plants. It was also found that a male factor expressed in the sperm cells of flowering plants is involved in gamete fusion not only of plants but also of animals and parasites. These discoveries have led to the consideration that the core mechanisms or factors involved in sexual reproduction may be shared by animals, plants and unicellular organisms. This valuable book is highly useful for reproductive biologists as well as for biological scientists outside this field in understanding the current progress of reproductive biology.
Author: D. de Nettancourt
Publisher: Springer Science & Business Media
ISBN: 3662120518
Category : Science
Languages : en
Pages : 245
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Book Description
Attempting to collect, sort out, comment on and summarize from available literature the relevant information dealing with a specific problem is always a difficult task which necessarily involves sub jective choices and implies a considerable risk of errors and omis sions. The difficulty is increased when, as in the case of incompati bility in angiosperms, the subject to be treated traces its history to preDarwinian times and reflects the total sum of numerous in vestigations dealing with widely different disciplines, such as ge netics, cytology, biochemistry, systematics and physiology, which no single reviewer may pretend to master sufficiently to avoid completely the possibility of misinterpretation. Furthermore, the complexity of the task is further augmented by the fact that the student of incompatibility, confronted as he or she is with still poorly understood phenomena of genetic control and molecular recognition, often tends to be speculative and, in some instances, over-imaginative at the time of fitting research observations and experimental data into appropriate models, schemes and hypo theses. The compensation for such a state of affair is, however, a strong one and lies in the remarkable willingness and readiness of "in compatibilists" to cooperate, and to provide information, ex planations and illustrations to anyone attempting to penetrate into their universe of research and of reflection.
Author: Brian James Atwell
Publisher: Macmillan Education AU
ISBN: 9780732944391
Category : Juvenile Nonfiction
Languages : en
Pages : 712
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Book Description
Accompanying CD-ROM includes 600 figures, tables and color plates from the book Plants in action which can be used for the production of color transparencies or for projections in lectures.
Author: Mohammad Maqbool Mir
Publisher: Springer Nature
ISBN: 9811994978
Category : Technology & Engineering
Languages : en
Pages : 393
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Book Description
This book focuses on the production technology of temperate nuts. It explores cultivar and plant improvement, development and selection of rootstocks, plant–water relations and irrigation, canopy architecture, and postharvest packaging of nut fruits. It also deals with organic approaches, biotechnological interventions, diseases, and pest management. Contributing authors address nut fruits such as walnut, pecan nut, chestnut, and hazel nut on different recent aspects. The development achieved in the fruit sector is indicative of the fact that there is growing demand of fruit produce. Temperate nuts with health benefits and market acceptability have best sources of fat, fiber, protein, and mineral. They provide dietary fiber, potassium, and a variety of health-protective bioactive compounds. Apart from the health benefits, production of temperate nuts improves the economy of the country as these are very good source of income and employment. In addition, there is wide diversification in the production pattern of nuts globally. Increased production technology such as hybrids, high-yielding selections/ varieties, improved propagation techniques, and increased use of fertilizers and manures have brought spectacular increase in the production of nut fruits. This book is of interest to teachers, scientists, researchers, and scholars. Also, the book serves as additional reading material for undergraduate and postgraduate students of agriculture and horticulture. Horticulture nurseries and orchard industries also find this to be a useful read.
Author: Elizabeth G. Williams
Publisher: Springer Science & Business Media
ISBN: 9401716692
Category : Science
Languages : en
Pages : 545
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Book Description
Plant reproductive biology has undergone a revolution during the past five years, with the cloning, sequencing and localization of the genes important in reproduction. These advantages in plant molecular biology have led to exciting applications in plant biotechnology, including the genetic engineering of male sterility and other reproductive processes. This book presents an interesting and contemporary account of these new developments from the scientists in whose laboratories they have been made. The chapters focus on two areas: the molecular biology of self-incompatibility, which is the system of self-recognition controlled by the S-gene and related genes; and the cellular and molecular biology of pollen development and genetic dissection of male sterility. Some chapters feature Arabidopsis, with its unique genetic system. Reproduction is vital for seed production in crop plants, and this book presents new approaches to manipulate plant breeding systems for the 21st century.
