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Bioresources of northern part of Vietnam Bi-directional estimation of environmental adaptability of crop genetic resources.

越南北部生物资源作物遗传资源环境适应性双向评价。

基本信息

批准号：
15380016
负责人：
KUBOTA Fumitake
金额：
$ 9.92万
依托单位：
KYUSHU UNIVERCITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2006
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15380016/
关键词：
Vietnam Genetic resources Environmental adaptability Bi-directional estimation rice legume

项目摘要

In this project, for estimation of bioresources of north Vietnam, we conducted 1. collection of genetic resources in north Vietnam and 2. evaluation pf environmental adaptability of genetic resources, and discussed preservation of bio-diversity in north Vietnam, development of available genetic resources and outlook of sustainable agriculture.1. Collection of crop genetic resourcesWe visited mountain area of Vietnam, Son La, Dien Bien Hoo, Bac Ha, Sapa, Lao Kai and Kao Ban) in 2004 and 2005. Then, cropping systems of these area were investigated, and we collected llspecies 70 varieties of genetic resources, including paddy rice, upland rice, legumes buckwheat and so.2. Evaluation of environmental adaptability of crop genetic resources(1) Evaluation of drought tolerance based on the ability of root penetration in riceWe investigated drought tolerance based on the ability of root penetration using different type of rice, upland rice of Vietnam and Japonica, and paddy rice of Japonica and Indica. Higher potential of drought tolerance was found in upland rice in Vietnam(2) Evaluation of growth feature and photosynthetic potential of hybrid rice VL20 during vegetative stageHybrid rice, VL20, has same level yield potential as compared to its parents (103s and R20) though duration to heading in VL20 is 10 days shoter than that in its parents. We investigated growth feature and photosynthetic potential of hybrid rice, VL20,during vegetative stage. In five weeks after sowing, crop growth rate in VL20 was significant higher than that in its parents which indicated that active growth of the beginning stage induced to higher dry matter production during shorter duration. Higher level of photosynthetic rate in VL20 was kept, which suggested that VL20 has feature of slow leaf senescence and superior photosynthetic potential as compared to its parents.

在这个项目中，为了评估越南北部的生物资源，我们进行了1。收集越南北部的遗传资源; 2.对遗传资源的环境适应性进行了评价，并讨论了越南北部生物多样性的保护、现有遗传资源的开发和可持续农业的前景.农作物遗传资源的收集我们在2004年和2005年访问了越南的山区，孙拉，奠边湖，北河，沙巴，老凯和高班。然后，对该地区的种植制度进行了调查，收集了包括水稻、高地、豆类、荞麦、大豆等在内的11种70个品种的遗传资源。作物遗传资源的环境适应性评价（1）基于根系穿透能力的水稻耐旱性评价以不同类型的水稻、越南高地和粳稻、粳稻和籼稻为材料，根据根系穿透能力对水稻的耐旱性进行了研究。（2）杂交水稻VL 20营养生长期的生长特性和光合势的评价杂交水稻VL 20的产量潜力与其亲本（103 s和R20）相当，但抽穗期比亲本短10天。研究了杂交水稻VL 20营养生长期的生长特性和光合势。在播后5周内，VL 20的生长速率显著高于亲本，说明前期生长活跃，在较短时间内干物质生产量较高。VL 20的光合速率保持在较高水平，表明VL 20具有叶片衰老慢、光合势上级的特点。