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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.1
- 수록면
- 67 - 77 (11page)
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Eight advanced breeding lines of cowpea [Vigna unguiculata (L.) Walp.] were evaluated in a multi-environment trial for phenotypic stability of grain yield, maturity and grain size. There was highly significant genotype x environment interaction for all traits. Simple correlation coefficient was computed to ascertain the level of relationship between stability parameters and agronomic traits. Line IT93K-452-1 was identified as most stable genotype and can be grown all over the Nigerian cowpea belt. The line IT90K-503-1 was the most unstable genotype in terms of grain yield and was also nonresponsive to the environment. However, it is environment specific. IT93K-452-1 has relatively stable maturity across environments. The result suggests that IT93K-452-1 will mature around the average of 65 days irrespective of the location in Nigeria. Lines IT95K-1455 and IT90K-503-1, whose stability parameter values were high, means that in respect of maturity, they are photo-thermo sensitive. They can mature early or delayed depending on the photo-thermal environment. However, lines such as IT93K-273-2-1, IT93K-129-4, IT93K-452-1 and IT86D-719 are photo-thermo insensitive. Line IT93K-1543 was identified as the most desirable genotype in terms of grain size. This is followed by IT93K-452-1. The line IT90K-503-1 had small but unstable seed size. This work identified IT93K-452-1 and IT93K-273-2-1 as the most stable genotypes for yield and maturity. Grain yield was highly positively correlated with bi and R2 but was negatively correlated with Sd2 i. Maturity was negatively highly correlated with bi, Wi, and CVi. Grain size on the other hand is not correlated with any of the parameters.
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참고문헌 (27)
참고문헌 신청
Ado SG / 1999 / Genotype x environment interaction in pepper (Capsicum annuum L.) evaluation trials in the Nigerian savannas / Nigerian Journal of Genetics 14:78~86
Bado BV / 2006 / Assessment of cowpea and groundnut contributions to soil fertility and succeeding sorghum yields in the Guinean savannah zone of Burkina Faso (West Africa) / Biol. Fert. Soils 43:171~176
Bagayoko M / 1998 / The role of cowpea on pearl millet yield, N uptake and soil nutrient status in millet-cowpea rotation in Mali / Proceedings of the regional workshop on Soil fertility management in West African land-use systems :109~114
Carsky RJ / 2002 / Cowpea rotation as a resource management technology for cereal-based systems in the savannas of West Africa, In Challenges and opportunities for enhancing sustainable cowpea production / Proceedings of the world cowpea conference III held at the International Institute of Tropical Agriculture (IITA) :252~265
Craufurd PQ / 1996 / Development in cowpea (Vigna unguiculata). III. Effects of temperature and photoperiod on time to flowering in photoperiod-sensitive genotypes and screening for photothermal responses / Expl. Agric 32:29~40
Bado BV / 2006 / Assessment of cowpea and groundnut contributions to soil fertility and succeeding sorghum yields in the Guinean savannah zone of Burkina Faso (West Africa) / Biol. Fert. Soils 43:171~176
Bagayoko M / 1998 / The role of cowpea on pearl millet yield, N uptake and soil nutrient status in millet-cowpea rotation in Mali / Proceedings of the regional workshop on Soil fertility management in West African land-use systems :109~114
Carsky RJ / 2002 / Cowpea rotation as a resource management technology for cereal-based systems in the savannas of West Africa, In Challenges and opportunities for enhancing sustainable cowpea production / Proceedings of the world cowpea conference III held at the International Institute of Tropical Agriculture (IITA) :252~265
Craufurd PQ / 1996 / Development in cowpea (Vigna unguiculata). III. Effects of temperature and photoperiod on time to flowering in photoperiod-sensitive genotypes and screening for photothermal responses / Expl. Agric 32:29~40
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