Genomic Prediction in a Multiploid Crop: Genotype by Environment Interaction and Allele Dosage Effects on Predictive Ability in Banana
Striga spp. are obligate root hemiparasites that constrain cereal production in sub-Saharan Africa. In maize, the open-pollinated variety Kakamega Striga-tolerant population of the year 1994 (‘KSTP 94’) has been popularized as a Striga-tolerant/resistant variety. To determine whether KSTP 94 harbors post-attachment resistance, this study used a soil-free assay based on observation chambers called rhizotrons. The results indicate that in addition to pre-attachment resistance, KSTP 94 exhibits post-attachment resistance to S. hermonthica and could therefore be a good genetic source for post-attachment resistance breeding.
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Rapid and efficient plant regeneration from shoot apical meristems of finger millet [Eleusine coracana (L.) Gaertn.] via direct organogenesis
A simple and efficient plant regeneration system via direct organogenesis was established in finger millet using in vitro derived shoot apical meristems. Six varieties; GBK-043128, GBK-043094, GBK-043050, GBK-043137, GBK-043122 and GBK-043124 were evaluated. Results indicated that plant regeneration response varied greatly among the varieties. In vitro germinated plants were successfully transferred to the greenhouse after hardening, with 300 shoots developing into fertile plants. This plant regeneration system offers a platform for production of transgenic finger millet.
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Assessment of morphological characteristics among upland rice (Oryza sativa and Oryza glaberrima) germplasm
Rice is an important staple food crop that feeds over half of the global population and has become the cereal that provides a major source of calories for the urban and rural poor in Africa. This work aimed to evaluate the morphological of rice (Oryza sativa and Oryza glaberrima) germplasm. Analysis of variance revealed highly significant difference (P≤ 0.01) among the accessions for all quantitative traits studied. The outcome of this study should be useful for the management of the germplasm conservation and future rice genetic improvement.
Read more: http://www.academicjournals.org/journal/AJB/article-abstract/A0C3FEE57936