Author: WOYESSA S. GPublisher:
ISBN:
Category :
Languages : en
Pages : 161
Book Description
Genetic Analysis in Bread Wheat (Triticum Dosticum L.) for Yield, Yield Attributing Traits and Disease Resistance
Author: WOYESSA S. GStability Analysis of Yield and Yield Attributing Characters of Promising Bread Wheat [Triticum Aestivum (L) Em.thell] Genotypes [With CD Copy]
![Stability Analysis of Yield and Yield Attributing Characters of Promising Bread Wheat [Triticum Aestivum (L) Em.thell] Genotypes [With CD Copy] PDF](https://books.google.com/books/content/images/frontcover/dlZXzwEACAAJ?fife=w80-h100)
Author: Vijeta GuptaGenetic Analysis in Wheat
Author: Solomon Gelalcha WoyessaPublisher: LAP Lambert Academic Publishing
ISBN: 9783845475622
Category :
Languages : en
Pages : 104
Book Description
Genetic information, especially about the nature of combining ability and type of gene action governing inheritance of important traits are guidelines to a breeder in selecting parents for development of hybrids, varieties and lines. This book is about results of research conducted on non segregating generations (parents and F1s ) and selected segregating (F2) population derived from 12 elite bread wheat (Triticum aestivum L.) genotypes following line by tester mating system. Parameters such as days to flowering and maturity; plant height, number of tillers per plant; peduncle length; spike length; total biomass per plant; number of grains per spike; grain yield per plant; 100-grain weight; and harvest index were analyzed and moreover, rust resistance mechanism was also considered. The objective is to reveal information on extent of heterosis and inbreeding depression; nature of gene action; extent of variability and genetic advance; association of component traits with each other and grain yield; and the way the component traits affect grain yield and finally rust resistance mechanisms. The book is helpful to mid-level researchers and students who seek to know more about wheat.
Studies on Methods of Creating Variability and Genetic Analysis of Yield and Its Component Traits in Bread Wheat (Triticum Aestivum L.em.Thell).
Author: Sada Ram VermaGenetic Analysis of Kernel Traits in Bread Wheat (T. Aestivum)
Author: Mala KumariPublisher: LAP Lambert Academic Publishing
ISBN: 9783659814259
Category :
Languages : en
Pages : 184
Book Description
Bread wheat (Triticum aestivum L.) is one of the most important food crops, feeding about 40 % of the world's population. Genetic improvement in wheat focus on three main areas: enhancing yield, overcoming biotic and abiotic stress and improvement end use quality. Grain size is an important physical indicator of seed quality that affects vegetative growth and is frequently related to yield, market grade factors and harvest efficiency. The grain length, width, and area were associated with a 40% variation in the milling quality of Australian winter wheat cultivars. Grain color is also one of important traits affecting flour yield and quality in wheat. For effective improvement of quality and yield of wheat, a plant breeder must have knowledge of inheritance of quality and agronomic traits.
Genetic Analysis of Grain Yield and Related Characters in Bread Wheat (T. Aestivum L.em. Thell) Under Normal and Stress Environments
Author: Vijaipal SinghGuide to Bread Wheat Breeding at CIMMYT
Author: Maarten van GinkelPublisher: CIMMYT
ISBN: 9706480021
Category :
Languages : en
Pages : 59
Book Description
Inheritance of Important Traits in Bread Wheat Using Diallel Analysis
Author: Inam UllahPublisher: LAP Lambert Academic Publishing
ISBN: 9783843373302
Category :
Languages : en
Pages : 144
Book Description
Bread wheat (Triticum aestivum L. em. Thell) is one of the most important cereal grain crop of the world and is cultivated over a wide range of climatic conditions. For a successful breeding program the inheritance of yield related traits is a pre- requisite. This monograph communicates the inheritance pattern of yield and related traits in bread wheat (Triticum aestivum L.) using 8x8 diallel analyses. Graphical analysis revealed additive gene action for days to heading, days to maturity, plant height, grains per spike, 1000 grains weight and harvest index. While over dominance gene action for flag leaf area, tillers per plant, Spike length and yield per plant. The GCA mean squares were significant for all traits except tiller per plant and yield per plant and were greater than SCA mean squares indicating the preponderance of additive genetic effects. The parents Tkb, Tat, Sarc-3 and SQ- 92 were good general combiners. The parents Tkb , Tat , Sarc-3 and SQ-92 and the specific crosses that showed high mid parent and better parent heterosis are recommended for further use in wheat breeding programmes.
Enhancing Efficiency in Wheat (Triticum Aestivum L.) Breeding for Abiotic and Biotic Stress Resistance Using Novel Physiological and Genetic Approaches
Author: Megan Johanna LewienPublisher:
ISBN:
Category :
Languages : en
Pages : 208
Book Description
By 2050 global demand for wheat (Triticum aestivum L.) is predicted to grow by 60%. To meet this demand, annual genetic gains must increase by 1.4%, and withstand increasing environmental stresses. The goal of the work herein was to use new phenomic, genomic and molecular tools to identify novel genomic regions associated with eyespot (Oculimacula yallundae and O. acuformis) disease resistance, drought tolerance and yield stability. To identify novel genomic regions associated with eyespot resistance in winter wheat, disease susceptibility was evaluated in two PNW winter wheat panels (n= 469, 399) and genome-wide association mapping was conducted. Of the 92 marker trait associations identified, the seven most significant cumulatively reduced eyespot disease response. As breeding lines were used, the results can be used for rapid introgression of resistance alleles into elite lines. The second objective of this work was to evaluate phenotypic associations of physiological traits and yield under rain-fed conditions to identify traits for use in breeding. 700 lines of the spring wheat nested association mapping panel were evaluated for water use efficiency, plant water status, photosynthetic and photoprotective mechanisms and grain yield over three years. Six traits had a cumulative effect on increasing yield: plant water status, plant height, photosynthetic capacity, vegetative green index, water used efficiency and days from sowing to heading. The physiological traits identified can be used to improve selection efficiency and yield stability under variable rain-fed conditions. The third objective of this work was to identify genomic regions associated with the water-use efficiency, plant water status, leaf health and photosynthesis. 650 lines of the spring wheat NAM panel were evaluated for these traits and grain yield under rain-fed conditions and joint inclusive composite interval mapping and genome-wide association analysis was conducted. The seven most significant grain yield QTL identified, located on chromosomes 1A, 1B, 2B, 4B, 5B, and 7B, were found in multiple environments and were associated with multiple physiological traits. This study helps reveal the genetic architecture of drought tolerance and grain yield and can be used to improve the efficiency of breeding under variable water-limited conditions.
![Stability Analysis of Genotypes with Concern to Yield Performance and Quality Traits in Bread Wheat ( Triticum Aestivum L ) [ With CD Copy ] PDF](https://books.google.com/books/content/images/frontcover/ESamzwEACAAJ?fife=w80-h100)
Author: Ibrahim Hassani