Intra-varietal diversity in landrace and modern variety of rice and buckwheat
The increased intra-varietal diversity has been considered as coping mechanism against unpredictable environmental factors in crop production. Relatively the risk of crop failure is minimum in landraces than in modern variety mainly because of homogenous population in modern variety. The diversity w...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
2018
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/97576 |
| _version_ | 1855533279044698112 |
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| author | Gurung, S.B. Mahat, P.M. Bhandari, B. Gauchan, D. Joshi, B.K. |
| author_browse | Bhandari, B. Gauchan, D. Gurung, S.B. Joshi, B.K. Mahat, P.M. |
| author_facet | Gurung, S.B. Mahat, P.M. Bhandari, B. Gauchan, D. Joshi, B.K. |
| author_sort | Gurung, S.B. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The increased intra-varietal diversity has been considered as coping mechanism against unpredictable environmental factors in crop production. Relatively the risk of crop failure is minimum in landraces than in modern variety mainly because of homogenous population in modern variety. The diversity was estimated and compared between landrace and modern variety of rice and common buckwheat in both quantitative and qualitative traits. Three landraces and three modern varieties of rice were used as self-pollinated crop and experiment was conducted in Jumla. Common buckwheat was used as cross pollinated crop in Kabre consisted of nine landraces and one modern variety. These two experiments were unreplicated and variation was measured at population level. Standard deviation, coefficient of variation and Shannon’ diversity index were estimated and variation between landraces and modern varieties was tested using F-test. Dendogram was drawn considering all observed traits for both the crops. In case of rice, variation was higher in landraces than in modern varieties for most of the traits. Variation for majority of the traits was also higher in landraces than in modern varieties of common buckwheat. This higher level of intra-varietal diversity in landraces of both crops might be the major phenomenon to have increased capacity to cope with different environmental stresses. The level of variation in both landraces and modern varieties is trait specific, in some traits, landraces showed higher intra-varietal diversity. The higher level of intra-varietal diversity should be considered for resilient production system and favorable policy environment should be created to promote the use of such diversity. |
| format | Journal Article |
| id | CGSpace97576 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| record_format | dspace |
| spelling | CGSpace975762025-11-12T05:45:20Z Intra-varietal diversity in landrace and modern variety of rice and buckwheat Gurung, S.B. Mahat, P.M. Bhandari, B. Gauchan, D. Joshi, B.K. varieties oryza buckwheat agrobiodiversity The increased intra-varietal diversity has been considered as coping mechanism against unpredictable environmental factors in crop production. Relatively the risk of crop failure is minimum in landraces than in modern variety mainly because of homogenous population in modern variety. The diversity was estimated and compared between landrace and modern variety of rice and common buckwheat in both quantitative and qualitative traits. Three landraces and three modern varieties of rice were used as self-pollinated crop and experiment was conducted in Jumla. Common buckwheat was used as cross pollinated crop in Kabre consisted of nine landraces and one modern variety. These two experiments were unreplicated and variation was measured at population level. Standard deviation, coefficient of variation and Shannon’ diversity index were estimated and variation between landraces and modern varieties was tested using F-test. Dendogram was drawn considering all observed traits for both the crops. In case of rice, variation was higher in landraces than in modern varieties for most of the traits. Variation for majority of the traits was also higher in landraces than in modern varieties of common buckwheat. This higher level of intra-varietal diversity in landraces of both crops might be the major phenomenon to have increased capacity to cope with different environmental stresses. The level of variation in both landraces and modern varieties is trait specific, in some traits, landraces showed higher intra-varietal diversity. The higher level of intra-varietal diversity should be considered for resilient production system and favorable policy environment should be created to promote the use of such diversity. 2018 2018-10-05T13:34:45Z 2018-10-05T13:34:45Z Journal Article https://hdl.handle.net/10568/97576 en Open Access application/pdf Joshi, B.K.; Gurung, S.B.; Mahat, P.M.; Bhandari, B.; Gauchan, D. (2018). Intra-varietal diversity in landrace and modern variety of rice and buckwheat. The Journal of Agriculture and Environment Vol. 19, 8 p. |
| spellingShingle | varieties oryza buckwheat agrobiodiversity Gurung, S.B. Mahat, P.M. Bhandari, B. Gauchan, D. Joshi, B.K. Intra-varietal diversity in landrace and modern variety of rice and buckwheat |
| title | Intra-varietal diversity in landrace and modern variety of rice and buckwheat |
| title_full | Intra-varietal diversity in landrace and modern variety of rice and buckwheat |
| title_fullStr | Intra-varietal diversity in landrace and modern variety of rice and buckwheat |
| title_full_unstemmed | Intra-varietal diversity in landrace and modern variety of rice and buckwheat |
| title_short | Intra-varietal diversity in landrace and modern variety of rice and buckwheat |
| title_sort | intra varietal diversity in landrace and modern variety of rice and buckwheat |
| topic | varieties oryza buckwheat agrobiodiversity |
| url | https://hdl.handle.net/10568/97576 |
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