Evaluation of the Potential Usefulness of Exotic Sorghum (Sorghum Bicolor Moench.) Germplasm PDF Download
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Author: Stephanie L. Greene
Publisher:
ISBN:
Category :
Languages : en
Pages : 236
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Author: Stephanie L. Greene
Publisher:
ISBN:
Category :
Languages : en
Pages : 236
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Author: Abebe Menkir
Publisher:
ISBN:
Category :
Languages : en
Pages : 250
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![Evaluation of Two Methods of Backcrossing in the Introgression of Exotic Germplasm Into Adapted Genotypes of Sorghum [Sorghum Bicolor (L.) Moench] PDF](https://books.google.com/books/content/images/frontcover/qtBsNwAACAAJ?fife=w80-h100)
Author: Newton Wayoga Ochanda
Publisher:
ISBN:
Category :
Languages : en
Pages : 262
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![Evaluation of the Heterotic Potential of Sorghum [Sorghum Bicolor (L.) Moench] Adapted to the Southern Africa Region PDF](https://books.google.com/books/content/images/frontcover/bhjRjwEACAAJ?fife=w80-h100)
Author: Leo Thokoza Mpofu
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Sorghum [Sorghum bicolor (L.) Moench] production in Africa is widespread with low yields due to low inputs and the lack of sorghum hybrids. This situation has forced most of these farmers to grow maize hybrids since they are readily available in the seed market. Sorghum hybrids could be used if their potential was demonstrated. The objective of this study is to document the level of heterosis in Southern Africa sorghum germplasm. The performance of 52 F1 grain sorghum hybrids and their parental lines was evaluated in four environments. Measurements for grain yield, panicle exsertion, days to mid anthesis and plant height were analyzed to obtain estimates of high parent heterosis. High parent heterosis was observed to be 37.18% for yield, 82.77% for exsertion, 0.02% for days to mid anthesis and 23.7% for height. ICSR-939 and (87EON366*90EON328)-LD30 can be used as testers to develop more female lines for further hybrid seed production in breeding programs because they had the highest general combining ability. Protein content averaged 11.69%. ATx635 had significantly higher protein content than ATx631 (13.49% compared to 9.69%, respectively) and its hybrids had more protein than ATx631 hybrids (11.6% compared to 10.67% for ATx631). Mean heterosis for protein content was negative at -12.5%. This shows that hybrids had lower protein content than their parents since protein content is negatively correlated to grain yield ( -0.35**). Starch content averaged 72.13% and ATx631 hybrids had more starch than ATx635 hybrids (73.16 compared to 72.37% respectively). Two hybrids, ATx. 631/(87EON366*90EON328)-LD30 and ATx631/ ((TAM428*SV1)*CE151)-LD3 had the highest yields (5.04 t/ha and 4.93 t/ha, respectively). These hybrids also had small grains with good hardness and acceptable whiteness. They had good exsertion, flowered in good time and had acceptable plant heights. These two hybrids were compared to regional check varieties Macia and Tegemeo for all traits and they were either superior or within an acceptable range. These two hybrids are therefore recommended for release in the region. There is need therefore to start working on the various components of seed systems in the region so that seed of these two hybrids is made available to farmers who need the seed.
Author: J.J. Adu-Gyamfi
Publisher: Springer Science & Business Media
ISBN: 940171570X
Category : Science
Languages : en
Pages : 333
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Ultimate success in exploiting the genetic capabilities of plants to grow in nutrient-stressed environments of the semi-arid tropics (SAT) requires a holistic view of food systems to ensure that genetic selections for improved yields on nutrient-poor soils will actually be adopted by farmers. This book sets out to address the important issue of how physiological mechanisms of nutrient uptake can best be combined with genetic options to improve the adaptation of crops to low-nutrient availability, thereby enhancing productivity of nutrient poor soils in the semi-arid tropics. The book examines (i) the sustainability of breeding for low-nutrient environments from the viewpoint of three interrelated disciplines; physiology, breeding, and socio-economics, (ii) candidate mechanisms and physiological traits to enhance uptake and utilization efficiencies, (iii) genetic approaches for manipulation of crop plants to enhance root exudation and access nutrients in the rhizosphere, and (iv) field practices and farmers' preferences for crop varieties grown in low-nutrient environments. Finally, the role of modelling in improving nutrient efficiency in cropping systems, recommendations for future research needs and strategies were highlighted. Attended by 50 international participants, this book is the outcome of the workshop held at ICRISAT-India during 27-30 September 1999 to mark the culmination of the Government of Japan/ICRISAT Project.
Author:
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ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 912
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Author: Eduardo Pinto Mulima
Publisher:
ISBN:
Category : Sorghum
Languages : en
Pages : 394
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Author: Molly Jane Parkhurst
Publisher:
ISBN:
Category :
Languages : en
Pages : 67
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Sorghum, Sorghum bicolor (L.) Moench, is a globally important cereal crop that has now been widely recognized for its versatile potential as a food, a feedstock and an alternative fuel source. The fuel is obtained through the enzymatic degradation and subsequent fermentation of cellulose and hemicellulose extracted from the plant biomass or direct fermentation of the starches available in the grain. For maximum potential in biomass and grain production, the genetic diversity represented in available germplasm collections must be assessed for traits of importance to biofuel production and incorporated into future breeding programs. As a first step, this study focuses on genotypic diversity in a collection of 43 accessions of S. bicolor assessed with AFLP markers in conjunction with measurement of biomass production, height and grain yield. The results obtained from this study suggest significant differences in phenotypic diversity among the accessions collected from different parts of the world. Ample diversity was also found in the genotypes of the accessions included, though not much genetic structure was implied. Through the analysis of genetic diversity and phenotypic variability, we have identified germplasm accessions that deserve further mapping studies. The identification of these accessions provides sorghum breeders new genetic stocks that can increase the yield potential of sorghum varieties while expanding the genetic base of commercial sorghum production.
Author: G. S. Kang
Publisher:
ISBN:
Category :
Languages : en
Pages : 64
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![An Evaluation of Grain Sorghum [Sorghum Bicolor (L.) Moench] PDF](https://books.google.com/books/content/images/frontcover/fdqPtwAACAAJ?fife=w80-h100)
Author: Thomas R. Zweifel
Publisher:
ISBN:
Category :
Languages : en
Pages : 222
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