Local sorghum (Sorghum bicolor (L.) Moench) on-farm genetic diversity status and possible determinants from Wollo lowland areas, northeastern Ethiopia

IF 1.3 Q3 AGRONOMY
Silamlak Birhanu Abegaz
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Abstract

Various agricultural crops are the world's sources of food, fodder, and energy. However, conservation management and diversification constraints remain a challenge. Therefore, the present study aimed to assess the status of local agricultural sorghum genetic diversity and potential determinants of the Wollo lowlands in northeastern Ethiopia. The greatest extent of local sorghum abundance was demonstrated in the study areas with the highest value being 4.25 DMg and 2.89 DMn in Werebabo district. However, 2.97 DMg and 2.04 DMn were recorded as the relatively lowest indices in Tehuledere province. In fact, the extent and type of diversity, measured by the number of varieties per farm, varied from region to region. Farmer perceived constraints such as late maturity, blending fluency, distance to nearest market (km), small land ownership, end-use quality, and plume size attributed to these deviations. The priority of the constraints was first determined by ranking the constraints based on the answers received from the respondents and then calculating the rank-based quotient. Several categorical variables of these constraints also showed a significant association with the status of local farm sorghum genetic diversity at p < 0.05 and p < 0.001. In general, the status of genetic diversity of local sorghum farms was low in all the provinces studied. Therefore, the seed exchange network between local farmers should be encouraged to use and conserve diversity on a daily basis. Community seed banks should also be established to enhance the conservation of beneficial local sorghum germplasm and maximize locally adapted sorghum landrace profiles.

Abstract Image

埃塞俄比亚东北部沃洛低洼地区当地高粱(Sorghum bicolor (L. Moench))农场遗传多样性状况及可能的决定因素
各种农作物是世界粮食、饲料和能源的来源。然而,保护管理和多样化制约因素仍是一项挑战。因此,本研究旨在评估埃塞俄比亚东北部沃洛(Wollo)低地当地农用高粱遗传多样性的现状及潜在的决定因素。研究地区的当地高粱丰产程度最高,最高值为韦雷博地区的 4.25 DMg 和 2.89 DMn。然而,在特胡勒代雷省(Tehuledere province),2.97 DMg 和 2.04 DMn 的指数相对最低。事实上,以每个农场品种数量衡量的多样性程度和类型因地区而异。农民认为的制约因素,如晚熟、混合流畅性、与最近市场的距离(千米)、土地所有权小、最终用途质量和羽量大小,都是造成这些偏差的原因。首先根据受访者的回答对制约因素进行排序,然后计算基于排序的商数,从而确定制约因素的优先级。在 p < 0.05 和 p < 0.001 时,这些制约因素中的几个分类变量与当地农场高粱遗传多样性状况也有显著关联。总体而言,在所研究的所有省份中,当地高粱农场的遗传多样性状况都较低。因此,应鼓励当地农民之间建立种子交换网络,以便日常使用和保护多样性。此外,还应建立社区种子库,以加强对当地高粱有益种质的保护,并最大限度地扩大适应当地情况的高粱陆地品系。
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来源期刊
Agrosystems, Geosciences & Environment
Agrosystems, Geosciences & Environment Agricultural and Biological Sciences-Agricultural and Biological Sciences (miscellaneous)
CiteScore
2.60
自引率
0.00%
发文量
80
审稿时长
24 weeks
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