Divergent Selection of Corn (Zea Mays) in Monoculture and Intercrop PDF Download
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Author: Niamh O'Leary
Publisher:
ISBN:
Category :
Languages : en
Pages : 142
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Author: Niamh O'Leary
Publisher:
ISBN:
Category :
Languages : en
Pages : 142
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Author: Gregorio Jacob Soto-Guevara
Publisher:
ISBN:
Category :
Languages : en
Pages : 270
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Author: Marsum Dahlan
Publisher:
ISBN:
Category : Beans
Languages : en
Pages : 544
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Author: Woerjono Mangoendidjojo
Publisher:
ISBN:
Category : Beans
Languages : en
Pages : 480
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Author: Mohamed Farah Shirdon
Publisher:
ISBN:
Category :
Languages : en
Pages : 220
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Author: Richard J. Dent
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 86
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Author: Meshack O. Odhiambo
Publisher:
ISBN:
Category :
Languages : en
Pages : 160
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Author:
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ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 780
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Author: Pedro Justino Jasa-Vega
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 206
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The objective of this study was to determine the correlated and direct responses to divergent mass selection for days-to-antheis (DTA) in a Mecican land-variety belonging to the race Chalqueno. Ten cycles of selection and evaluations were conducted at Chapingo. The tenth (final cycle) also was evaluated at College Station. Also, a combined general analysis involving all data collected over the six evaluation in Chapingo, was done. The response of DTA to selection was significant in both directions in all evaluations from 1976 to 1982. However, there was asymmetry in response, the later direction being about three times that of the earlier. The total response in DTA over six evaluation in Chapingo, was: 42.5% at a rate of 4.04% +- 0.21 per cycle in the later direction and, -11.7% at a rate of -1.38% +- 0.21 per cycle in the earlier direction. In addition, response of F1 crosses (between later by earlier selection) to DTA was found to be exactly intermediate between parents. The high linear response to selection in both directions and the intermediate F1 value, suggested and average additive effect of the genes controlling DTA. Realized heretability for DTA was calculated as the coefficient of linear regression between the cumulative response on DTA against cumulative calculated differential selection, which were 0.25 +- 0.03 in the later direction, 0.19 +- 0.02 in the earlier direction, and 0.24 +- 0.02 for divergence (later - earlier) values. All b1 coefficient were different from zero at P=0.01 level. (...).
Author:
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ISBN:
Category : Agriculture
Languages : en
Pages : 964
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