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Factors promote germination and initial growth of Monochoria vaginalis

100%

Xuan T. D., Anh L. H., Minh T. N., Khanh T. D.

International Letters of Natural Sciences

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2016

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tom 59

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Evaluation of genetic diversity of local-colored rice landraces using SSR markers

76%

Thi Hue H., Nghia L. T., Minh H. T., Anh L. H., Thi Thu Trang L., Khanh T. D.

International Letters of Natural Sciences

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2018

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tom 67

Analysis of genetic diversity of 90 Vietnamese local-colored rice accessions was carried out using 40 SSR markers. The numbers of polymorphic alleles ranged from 3 to 12 alleles per locus and average of 7.1 alleles per locus. The similarity coefficients of the rice landraces fluctuated from 0.76 to 0.93; at a genetic correlation level of 0.78. Ninety accessions of rice landraces were divided into five groups based on analysis of genetic relationships. The results have indicated that 11 markers included M250, RM302, RM10926, RM208, RM227, RM17231, RM23251, RM5647, RM1376, RM339 and RM228 which gave the unique allele. These markers can be used effectively for genetic diversity of colored rice and provided a specific database and useful materials for landraces identification, local germplasm conservation for further colored rice improvement on rice quality via rice breeding programs in Vietnam.

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Effect of salt on growth of rice landraces in Vietnam

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Anh L. H., Hue H. T., Quoc N. K., Nghia L. T., Trung K. H., Trung T. N., Trang D. H., Xuan T. D., Khanh T. D.

International Letters of Natural Sciences

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2016

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tom 59

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Allelopathic activity of dehulled rice and its allelochemicals on weed germination

52%

Khang D. T., Anh L. H., Thu Ha P. T., Tuyen P. T., Quan N. V., Minh L. T., Quan N. T., Minh T. N., Xuan T. D., Khanh T. D., Trung K. H.

International Letters of Natural Sciences

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2016

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tom 58

In this study, the allelopathic potential of dehulled rice, rice, and hulls of rice on germination of weeds was evaluated in laboratory. Phenolic acids in growth media of these plants were also identified and quantified using HPLC. Identified allelochemicals were reversely tested for phytotoxic effects on germination and seedling growth of barnyardgrass, lettuce, radish and rice. The results showed that the inhibitory effects of dehulled rice were stronger than those of hulls and rice. Dehulled rice caused 66.7% and 50.6% reduction in radish root length and lettuce shoot height, respectively. Dehulled rice showed strong inhibitory effects on root length of lettuce and shoot height of radish while hulls and rice exhibited stimulation. Regarding phenolic identification, vanillin and vanillic acid were detected as allelochemicals in root exudates of rice and tested plants. The results revealed that most of the vanillin and vanillic acid treatments showed high inhibitory effects on germination rates and seedling growth of lettuce and radish, high stimulatory activity on root elongation of rice. Vanillic acid (100 ppm and 200 ppm), vanillin (100 ppm) and their mixture (200 ppm) completely inhibited survival of lettuce. The findings indicate the allelopathic potential of dehulled rice which can be used for identification of more phytotoxins to produce bioherbicides in agricultural practices.

Ograniczanie wyników

4 International Letters of Natural Sciences

4 Anh L. H.

4 Khanh T. D.

3 Xuan T. D.

2 Minh T. N.

2 Nghia L. T.

2 Trung K. H.

1 Hue H. T.

1 Khang D. T.

1 Minh H. T.

1 Minh L. T.

1 Quan N. T.

1 Quan N. V.

1 Quoc N. K.

1 Thi Hue H.

1 Thi Thu Trang L.

1 Thu Ha P. T.

1 Trang D. H.

1 Trung T. N.

1 Tuyen P. T.

1 2018

3 2016

Factors promote germination and initial growth of Monochoria vaginalis

Evaluation of genetic diversity of local-colored rice landraces using SSR markers

Effect of salt on growth of rice landraces in Vietnam

Allelopathic activity of dehulled rice and its allelochemicals on weed germination