Author: Leo Thokoza Mpofu
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
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.
Evaluation of the Heterotic Potential of Sorghum [Sorghum Bicolor (L.) Moench] Adapted to the Southern Africa Region
Author: Leo Thokoza Mpofu
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
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.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
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.
Evaluation of the Potential Usefulness of Exotic Sorghum (Sorghum Bicolor Moench.) Germplasm
Author: Stephanie L. Greene
Publisher:
ISBN:
Category :
Languages : en
Pages : 236
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 236
Book Description
Evaluation of South African Sorghum (Sorghum Bicolor (L.) Moench) Landraces and Breeding of Varieties Suitable for Low-input Agriculture
Author: Ralf Uptmoor
Publisher:
ISBN: 9783899592153
Category :
Languages : en
Pages : 113
Book Description
Publisher:
ISBN: 9783899592153
Category :
Languages : en
Pages : 113
Book Description
A Critical Analysis of Adaptation in Sorghum Bicolor (L.) Moench
Author: Anne Clare Spelletich
Publisher:
ISBN:
Category : Sorghum
Languages : en
Pages : 204
Book Description
Publisher:
ISBN:
Category : Sorghum
Languages : en
Pages : 204
Book Description
Master's Theses Directories
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 306
Book Description
"Education, arts and social sciences, natural and technical sciences in the United States and Canada".
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 306
Book Description
"Education, arts and social sciences, natural and technical sciences in the United States and Canada".
Heterosis, Combining Ability, and Breeding Potential Studies for Grain Yield and Yield Components in Guinea Sorghums [Sorghum Bicolor (L.) Moench
Author: Aboubacar Toure
Publisher:
ISBN:
Category : Sorghum
Languages : en
Pages : 448
Book Description
Publisher:
ISBN:
Category : Sorghum
Languages : en
Pages : 448
Book Description
Effectiveness of Classes of Testers for Evaluation of Lines as Potential Parents for Grain Sorghum [Sorghum Bicolor (L.) Moench] Hybrids
Author: Jeutong Fabien
Publisher:
ISBN:
Category :
Languages : en
Pages : 368
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 368
Book Description
Evaluation of Two Methods for Introgressing Exotic Germplasm Into Adapted Genotypes in Sorghum (Sorghum Bicolor L. Moench)
Author: Abebe Menkir
Publisher:
ISBN:
Category :
Languages : en
Pages : 250
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 250
Book Description
An Evaluation of Grain Sorghum [Sorghum Bicolor (L.) Moench]
Author: Thomas R. Zweifel
Publisher:
ISBN:
Category :
Languages : en
Pages : 222
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 222
Book Description
Evaluation of Mixed Crop of Sorghum (Sorghum Bicolor (L.) Moench) and Legumes
Author: Peter E. Odo
Publisher:
ISBN:
Category :
Languages : en
Pages : 216
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 216
Book Description