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Author: J.G.E.de FRANCA Publisher: ISBN: Category : Languages : en Pages : 105
Book Description
The objective of this study was to evaluate the combining ability, heterosis and variance components of a set of selected restorers and male sterile in sorghum for the following characters: days to 50% flowering, plant height, panicle length, grain yield per panicle, number of grains per panicle, thousand grain weight, grain breaking strength, % floaters, % water absorption, flour particle size index, rolling quality of the dough and gel spreading. Twenty parental lines - 11 male steriles and 9 restorers and their 99 hybrids formed the experimental material. parents and hybrids were palnted in adjancent trials in a RBD design with threee replications each. The combining ability analysis followed a line x tester mating system. The experiments were carried out under rainfed conditions during the rainy (kharif) and post-rainy (Rabi) seasons of 1982 at ICRISAT Center, patancheru, A.P., India. Significant variation was observed in the genotypes studied for most of the charactrs analysed. Generally the restorers showed larger variation than the male sterile lines. Significant levels of heterosis and heterobeltiosis were observed for plant height, grain yield per panicle, grain number per panicle and % floaters. Dominace was in the direction of earliness, increased height, panicle length, grain number and yield, decreased seed weight, % floaters, flour particle size and gel spreading. The results revealed that most of the agronomic and grain quality characters were highly influenced by additive gene action. (...).
Author: J.G.E.de FRANCA Publisher: ISBN: Category : Languages : en Pages : 105
Book Description
The objective of this study was to evaluate the combining ability, heterosis and variance components of a set of selected restorers and male sterile in sorghum for the following characters: days to 50% flowering, plant height, panicle length, grain yield per panicle, number of grains per panicle, thousand grain weight, grain breaking strength, % floaters, % water absorption, flour particle size index, rolling quality of the dough and gel spreading. Twenty parental lines - 11 male steriles and 9 restorers and their 99 hybrids formed the experimental material. parents and hybrids were palnted in adjancent trials in a RBD design with threee replications each. The combining ability analysis followed a line x tester mating system. The experiments were carried out under rainfed conditions during the rainy (kharif) and post-rainy (Rabi) seasons of 1982 at ICRISAT Center, patancheru, A.P., India. Significant variation was observed in the genotypes studied for most of the charactrs analysed. Generally the restorers showed larger variation than the male sterile lines. Significant levels of heterosis and heterobeltiosis were observed for plant height, grain yield per panicle, grain number per panicle and % floaters. Dominace was in the direction of earliness, increased height, panicle length, grain number and yield, decreased seed weight, % floaters, flour particle size and gel spreading. The results revealed that most of the agronomic and grain quality characters were highly influenced by additive gene action. (...).
Author: F. C. Collins Publisher: ISBN: Category : Languages : en Pages : 109
Book Description
Combining ability for grain yield and protein quantity and quality of the grain was investigated in nineteen sorghum lines and in F1 hybrids obtained from certain crosses among the nineteen lines. In 1967 an incompleta diallel was grown which consisted of inbred parents and crosses among 12 lines used as males and four lines used as females. In 1968 a nine parent kialllel was grown which consisted of the parents and one set of F1's. Grain yield, percentage protein, percentage lysine, addition, date of flowering, leaf number, heig ht, flag leaf area index, head exertion, head length, yield per head, and 100 seed weight were examined in the 1968 study. Significant differences among genotypes were found for all characters. Grain yield ranged from 3088 to 15863 Kg/ha, protein varied from 9.18 to 18.22 percent; and the range of lysine was from 1.25 to 2.74 percent. A highly significant general combining ability (GCA) was found only in the 1968 study and it exixtged or every character. Grain yield and percentage lysine had GCA : SCA mean square ratios of less than 10:1 and percentage protein had a 31:1 ratio. Many F1's yielded significantly higher levels of protein than their parents. Among these were hybrids whose parents were superior for yield and protein level. Percentage lysine and yield were unrelated in 1967 but were positively associated in 1968. These results suggest that both additive and non-additive gene action influenced yield, protein, and lysine and that high levels of protein and lysine can be (...).
Author: José Geraldo Eugênio De França Publisher: ISBN: Category : Heterosis Languages : en Pages : 412
Book Description
This study had two distinct components: an agronomic/breeding segment and a sorghum malt component. The first consisted of field avaluation for traits related to agronomic performance, combinig ability, and heterosis. It was conducted during 1988 and 1989. The 1988 trial, with 51 genotypes, was sown at College Station and Halfway, TX. During 1989, the trial consisted of 7 females and 13 male parents, their 91 hybrids, a common check (ATx399*RTx430), and another hybrid check in one subset (ATx399*sc103-12E) to balance the whole design. It was conducted at College Station, Halfway, Chillicothe, and Corpus Christi, TX. In the first year each trial was divided into 4 subsets, while during the second, the trial consisted of 8 subsets, each with 15 experiment units.Hybrids, generally had larger panicles and higher yields, were taller, reached anthesis earlier, showed superior harvest indices, and lodged more than the parents. Combinig ability and GCA:SCA mean square ratios showed that general combinig ability variances were significant for all the variables studied. It showed also that additive variance was more important in controlling the genetic expression for the traits measured. The most superior parental lines for grain yield, across environments were ATx631, ATx623, ATx378, RTx430, R8505, VG146 and Dorado. Grain was saved from the field trials to be used in evaluation of some grain and malt characteristics. Sorghum beer is an important components of Africa culture and is used as a food or drink in many (...).
Author: Aruna C Publisher: Woodhead Publishing ISBN: 0081018800 Category : Technology & Engineering Languages : en Pages : 452
Book Description
Breeding Sorghum for Diverse End Uses is a comprehensive overview of all significant global efforts for the genetic improvement of sorghum, a major crop of many semi-arid nations that is suitable for a huge range of uses, from human food, to biofuels. Split into two main sections, the book initially reviews the genetic suitability of sorghum for breeding, also providing the history of the genetic improvement of the grain. Finally, other sections look at specific breeding programs that could be improved in a number of areas, including human food, animal feed and industrial usage. Readers in academics, research, plant genetics and sorghum development will find this resource of great value. In addition, it is essential reading for engineers who utilize sorghum for food, feed and industrial materials in industry. - Provides information on key advances in the genetic makeup of sorghum - Allows plant breeders to apply this research to effectively breed new strains of sorghum that are dependent on final usage goals - Includes the latest findings in each section to orient researchers to plans for future genetic enhancement
Author: Rafael Arturo Mateo Moncada Publisher: ISBN: 9781109849813 Category : Languages : en Pages : 120
Book Description
The use of AFLP markers allowed the identification of five strong clusters through estimates of genetic similarities. This classification did not group the lines by either their genetic background or their fertility reaction. This study provides information to identify specific combinations that would help to understand heterotic relationships in sorghum, and support the suggestions made by Menz and Gabriel that races in sorghum are not well defined.
Author: J.G.E.de FRANCA
Author: J.G.E.de FRANCA
Author: J.G.E. Franca
Author: Jose Geraldo Eugenio De franca
Author: F. C. Collins
Author: José Geraldo Eugênio De França
Author: 
Author: German Jose Perez
Author: Aruna C
Author: Rafael Arturo Mateo Moncada
Author: Emil Quinto Javier