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Traditional seed management and genetic diversity in barley varieties in high-hill agro-ecosystems of Nepal 总被引:1,自引:0,他引:1
Jwala Bajracharya Anthony H. D. Brown Bal K. Joshi Dipak Panday Bimal K. Baniya Bhuwon R. Sthapit Devra I. Jarvis 《Genetic Resources and Crop Evolution》2012,59(3):389-398
Chawali and Lekali are two common farmer’s barley varieties or landraces in Jumla, Nepal (2,240–3,000 m) with small to bold
grains and wide adaptation from irrigated low lands to high hills. This study was undertaken to test whether features of the
traditional seed system can significantly influence the diversity of a crop and its conservation on-farm. In Jumla (high-hill),
the barley seed system is completely informal and is mainly from farmer to farmer. In the present study, the seed flows and
the pattern of genetic diversity in barley were investigated to detect differences between the two varieties and test the
divergence among populations of each variety These data suggested that Chawali, the more common variety, was less subject
to homogenising gene flow between farms than was Lekali. A total of 128 farming households were surveyed for seed supply information
and 128 populations for each landrace from two villages: Kartikswami and Talium were collected for SSR diversity analysis.
Some 92 SSRs were screened in an initial sample of 20 barley populations of both landraces and 2 improved varieties (LG-51
and Soluwa). Of the 81 SSRs that consistently amplified, only 15 SSRs (19%) were polymorphic with gene diversity values ranging
from 0.09 to 0.71. A medium to low diversity was detected among the landrace populations of barley varieties. Chawali populations
were less polymorphic within ecological groups, and more divergent between than were Lekail populations. This result accords
with Chawali having a more conservative local seed system. 相似文献
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Baniya Anil Joseph Soumi Duncan Larry Crow William Mengistu Tesfamariam 《European journal of plant pathology / European Foundation for Plant Pathology》2021,161(2):439-452
European Journal of Plant Pathology - Sex determination is a key developmental event in all organisms. The pathway that regulates sexual fate has been well characterized at the molecular level in... 相似文献
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