Ibitoye Dorcas Olubunmi, Kolawole Adesike Oladoyin
Genetic Resources Unit, National Horticultural Research Institute, Ibadan, Nigeria.
Department of Crop Production and Soil Science, Ladoke Akintola University of Technology, Ogbomoso, Nigeria.
Front Plant Sci. 2022 Mar 24;13:787577. doi: 10.3389/fpls.2022.787577. eCollection 2022.
Okra [ (L.) Moench] is a nutrient-rich economically important vegetable crop grown in tropical and sub-tropical regions of the world. Okra is one of the horticultural mandate crops of the National Horticultural Research (NIHORT), Ibadan, Nigeria. It is an under-studied crop in terms of genetic improvement in Nigeria. In response to farmers' demand for improved varieties, the institute commenced efforts in developing novel okra varieties. However, a successful and sustainable crop improvement program depends on the identification of market-driven demands and the availability of variation in the crop germplasm. In view of the above, this research began with an appraisal study to assess the current situation of okra production and to identify farmers' preferred traits for establishing breeding priorities. According to the results of the participatory rural appraisal, some of the important constraints affecting okra productivity are lack of improved varieties, diseases, pests, and drought. The quest to assess variability in the collected okra accessions and select superior varieties with farmers' preferred traits, fifty (50) okra accessions were evaluated in the field for 3 consecutive years (2019-2021) using a 5 × 10 α-lattice incomplete block design with three replications. The ANOVA revealed high significant variation ( < 0.001) in the number of days to first flower, pod length, and pod girth. The variability observed among the accessions will be useful in the selection of potential parents required for hybridization and generation of progenies with desirable traits for farmers.
秋葵[(L.)Moench]是一种营养丰富、具有重要经济价值的蔬菜作物,生长于世界热带和亚热带地区。秋葵是尼日利亚伊巴丹国家园艺研究所(NIHORT)的园艺重点作物之一。在尼日利亚,就遗传改良而言,秋葵是一种研究不足的作物。为响应农民对改良品种的需求,该研究所开始致力于培育新型秋葵品种。然而,一个成功且可持续的作物改良计划取决于确定市场驱动的需求以及作物种质中变异的可获得性。鉴于上述情况,本研究首先进行了一项评估研究,以评估秋葵生产的现状,并确定农民优先选择的性状以确定育种重点。根据参与式农村评估的结果,影响秋葵生产力的一些重要制约因素包括缺乏改良品种、病虫害和干旱。为了评估收集到的秋葵种质的变异性,并选择具有农民优先选择性状的优良品种,连续三年(2019 - 2021年)在田间使用5×10α - 格子不完全区组设计、三次重复对五十(50)份秋葵种质进行了评估。方差分析显示,初花天数、荚果长度和荚果周长存在极显著差异(<0.001)。在种质中观察到的变异性将有助于选择杂交所需的潜在亲本,并培育出具有农民所需优良性状的后代。