Potential of Temperate, Tropical, and Sub-Tropical Exotic Maize Germplasm for Increased Gains in Yield Performance in Sub-Tropical Breeding Programs
نویسندگان
چکیده
Exotic germplasm (i.e., beyond the breeder’s target area) has traditionally been used to broaden genetic base of local (germplasm within populations, but little done assess gains that could be induced by this breeding practice in sub-tropical regions Africa. Here, eight maize (Zea mays L.) inbred lines developed from pedigree crosses exotic and sub-tropically adapted lines; STALs) were inter-mated together with six elite STALs, a partial diallel mating scheme, order depict yield can made when genes are integrated pool. The crossing scheme yielded total 91 F1s which evaluated nine commercial checks multi-environmental trials (METs) at locations representing agro-ecologies is predominantly grown Zimbabwe. Across site Analysis Variance (ANOVA) showed differences grain (GY) performance F1s. Significant genotype x environment effects was also detected for GY GEI; p < 0.05). parents temperate background [i.e., P7 (S) P2 (T)] highest potential (e.g., G44; = 10.52 tha−1). Apart showing high potential, G44 demonstrated stable across diverse mature earlier than best check hybrid. In conclusion, incorporation genes, especially those regions, may improve yielding ability stability introduce earliness maturity populations regions.
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ژورنال
عنوان ژورنال: Agronomy
سال: 2023
ISSN: ['2156-3276', '0065-4663']
DOI: https://doi.org/10.3390/agronomy13061605