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Evaluation Of Two Maize Populations After Eight Cycles Of Reciprocal Recurrent Selection
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Book Synopsis Evaluation of Two Maize Populations After Eight Cycles of Reciprocal Recurrent Selection by : Thomas Craig Kevern
Download or read book Evaluation of Two Maize Populations After Eight Cycles of Reciprocal Recurrent Selection written by Thomas Craig Kevern and published by . This book was released on 1981 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of 11 Cycles of Reciprocal Recurrent Selection in BSSS and BSCB1 Maize Populations by : Vichien Keeratinijakal
Download or read book Evaluation of 11 Cycles of Reciprocal Recurrent Selection in BSSS and BSCB1 Maize Populations written by Vichien Keeratinijakal and published by . This book was released on 1990 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Evaluation of Eight Cycles of Replicated Recurrent Selection in Maize by : Dana Del Galusha
Download or read book An Evaluation of Eight Cycles of Replicated Recurrent Selection in Maize written by Dana Del Galusha and published by . This book was released on 1999 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Five Cycles of Recurrent Selection for Cold Tolerance in Two Maize Populations by : Kathleen Gehl Hoard
Download or read book Evaluation of Five Cycles of Recurrent Selection for Cold Tolerance in Two Maize Populations written by Kathleen Gehl Hoard and published by . This book was released on 1984 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Six Cycles of Reciprocal Recurrent Selection in Maize by : Carlos Fernando Llorente
Download or read book Evaluation of Six Cycles of Reciprocal Recurrent Selection in Maize written by Carlos Fernando Llorente and published by . This book was released on 1970 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Response to Eight Cycles of Full-sib Reciprocal Recurrent Selection for Grain Yield and Standability in BS10 and BS11 Maize Populations by : Guillermo Hugo Eyherabide
Download or read book Response to Eight Cycles of Full-sib Reciprocal Recurrent Selection for Grain Yield and Standability in BS10 and BS11 Maize Populations written by Guillermo Hugo Eyherabide and published by . This book was released on 1989 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Changes in Genetic Variance After Eleven Cycles of Reciprocal Recurrent Selection in BSSS and BSCB1 Maize Populations by : Bruce John Schnicker
Download or read book Changes in Genetic Variance After Eleven Cycles of Reciprocal Recurrent Selection in BSSS and BSCB1 Maize Populations written by Bruce John Schnicker and published by . This book was released on 1991 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Recurrent Selection in Leaming and Midland Maize Populations by : Marcelo Javier Carena
Download or read book Evaluation of Recurrent Selection in Leaming and Midland Maize Populations written by Marcelo Javier Carena and published by . This book was released on 1999 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Favorable responses to selection were observed in traits that are essential for adaptation, especially in root lodging. S1-S2 recurrent selection was an effective method to adapt and improve both populations, suggesting an adequate balance between the selection among S1 and S2 progenies. Intrapopulational recurrent selection was also successful in increasing the heterotic expression between Leaming and Midland Yellow Dent. The first objective of our long-term program has been achieved and considerable improvements have been made. An alternative U.S. heterotic pattern has been confirmed and needs refinement, and an interpopulational-reciprocal recurrent selection program including improved selection cycles of Leaming and Midland Yellow Dent seems desirable.
Book Synopsis Evaluation of Progress in Recurrent Selection for Specific Combining Ability in Two Open-pollinated Maize (Zea Mays L.) Varieties by : Ronald N. Walejko
Download or read book Evaluation of Progress in Recurrent Selection for Specific Combining Ability in Two Open-pollinated Maize (Zea Mays L.) Varieties written by Ronald N. Walejko and published by . This book was released on 1976 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: To decide upon the most efficient breeding and testing procedures to improve maize populations, the plant breeder must have adequate knowledge of the type of gene action involved in yield heterosis. Two types of gene action have been postulated to account for yield heterosis in maize: dominance and overdominance. Recurrent selection of specific combining ability and for general combining ability have been proposed as methods to improve maize populations. Recurrent selection for specific combining ability uses a narow genetic base tester and originally was proposed on the assumption that overdominance is the main type of gene action responsible for yield heterosis. Conversely, selection for general combining ability uses a broad genetic base tester and assumes that dominant, favorable factors are concerned in yield heterosis. A procedure was proposed to compare the relative importance of dominance and overdominance in yield heterosis. This procedure involved recurrent relection for specific combining ability in two heterozygous source populations with a common inbred line tester. The purpose of this study was to evaluate progress in 5 cycles of recurrent slection for specific combining ability in two open-pollinated maize varieties and to determine the type of gene action involved in yield heterosis. The two source populations were the open-pollinated varieties, Kolkmeier and Lancaster, and the inbred line, Hy, was used as the common tester. After 5 cycles of recurrent selection, 6 population (C0 to C5) from (...).
Book Synopsis Evaluation of S1 Lines from Original and Advanced Populations of Two Maize Varieties to Determine the Effects of Reciprocal Recurrent Selection by : Kathleen Ann Grady
Download or read book Evaluation of S1 Lines from Original and Advanced Populations of Two Maize Varieties to Determine the Effects of Reciprocal Recurrent Selection written by Kathleen Ann Grady and published by . This book was released on 1980 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Recurrent Selection for Combining Ability Between Two Partitioned Populations in Maize by : Gregory John Holland
Download or read book Evaluation of Recurrent Selection for Combining Ability Between Two Partitioned Populations in Maize written by Gregory John Holland and published by . This book was released on 1991 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Maize Populations Resulting from Divergent Recurrent Selection Under Interseeding with Red Clover by : Mohamed Farah Shirdon
Download or read book Evaluation of Maize Populations Resulting from Divergent Recurrent Selection Under Interseeding with Red Clover written by Mohamed Farah Shirdon and published by . This book was released on 1993 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Observed Response and Genetic Variability in Two Maize Populations After Four Cycles of Reciprocal Full-sib Selection by : Manuel Montecer Lantin
Download or read book Observed Response and Genetic Variability in Two Maize Populations After Four Cycles of Reciprocal Full-sib Selection written by Manuel Montecer Lantin and published by . This book was released on 1980 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Maize Populations Developed from Different Recurrent Selection Methods by : Ken Alan Mayberry
Download or read book Evaluation of Maize Populations Developed from Different Recurrent Selection Methods written by Ken Alan Mayberry and published by . This book was released on 1992 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Changes in Physiological Traits Associated with Five Cycles of S1 Recurrent Selection in Two Maize Populations by : Bernard James Hable
Download or read book Changes in Physiological Traits Associated with Five Cycles of S1 Recurrent Selection in Two Maize Populations written by Bernard James Hable and published by . This book was released on 1985 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: Five cycles of S1 recurrent selection for cold tolerance were conducted at Iowa State University in maize population BS13(SCT) and BSSS2(SCT). Previous studies have indicated that improvement in cold tolerance had been realized in these programs and that a correlated improvement in grain yield had taken place. The objective of this study were: 1) to examine the change in ontogenetic development correlated with changes in cold tolerance, 2) to evaluate changes in physiological traits and yield components associated with the previously observed correlated improvements in grain yield, and 3) to relate changes in means to changes in allelic frequencies and genetic drift. The CO, C5, and C0 c C5 intrapopulation cross of both BS13(SCT) and BSSS2(SCT), and the CO xCO and C5 x C5 interpopulation crosses were evaluated in five environments over three years. All experiments were planted in five environments over three years. All experiments were planted after 20 April in central Iowa. To assess the correlated changes, the C0 and C% cycle means were compared and a model proposed by Smith (1979a) was utilized to estimate correlated changes in gene frequency and changes in gne frequency due to restricted population size. The recurrent selection programs for cold tolerance resulted in earlier flowering in both of the population evaluated in this study. The C5 cycels of both BS13(SCT) and BSSS2(SCT) silked in at least 40 fewer growing degree days (GDD) than the CO cycles, and estimated, correlacted for genetic drift, (...).
Book Synopsis Response to Thirteen Cycles of Reciprocal Full Sib Recurrent Selection in the BS10 and BS11 Maize (Zea Mays L.) Populations by : Benjamin Aaron Ford
Download or read book Response to Thirteen Cycles of Reciprocal Full Sib Recurrent Selection in the BS10 and BS11 Maize (Zea Mays L.) Populations written by Benjamin Aaron Ford and published by . This book was released on 2001 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increases in grain yield, the primary trait for selection, include a direct response of 2.2 percent per cycle in the population cross, and indirect responses of 3.3 and 1.2 percent per cycle in BS10 and BS11, respectively, but only the response for BS11 fits a linear model. Linear trends through the first nine selection cycles, however, indicate a 4.6 percent per cycle increase for the population cross, as well as increases of 1.6 percent in BS10 and 1.6 percent in BS11 parent populations. Evaluations of random S1 line performance for BS10CO, BS10C13, BS11CO, and BS11C13 indicate decreasing trends in genetic variability over 13 cycles of FR. Exceptions are grain yield in BS10 and BS11 and plant height in BS11. While genetic variance estimates for grain yield are nearly equal for BS11CO and BS11C13, a nearly significant increase in variability is evident from BS10CO to BS10C13. Variability estimates suggest FR for grain yield in BS10 and BS11 will be effective in future selection cycles.
Book Synopsis Evaluation of Reciprocal Recurrent Selection for Grain Yield in Maize (Z. Mays L) by : Seme Debela
Download or read book Evaluation of Reciprocal Recurrent Selection for Grain Yield in Maize (Z. Mays L) written by Seme Debela and published by . This book was released on 1972 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
