Comparative Environmental Studies on the Improvement of Production Techniques in Horticultural Crops.

在本项目执行期间，共进行了8次科学家相互交流。在进行这些交流的同时，就每一种方案，即果树、蔬菜和观赏花卉，提出了关于园艺作物生产及其相关比较环境研究的许多方面的建议，如下：(1)在泰国北部高原温带落叶果树中，低温条件不足以使其打破休眠状态，因此需要改进破眠技术；(2)在热带地区开展蔬菜水培生产，由于水质和资源问题，需要进行地点调查和选择；3)他们对泰国观赏花卉新品种的离体培养和化学调控等新技术的发展充满希望。1993年，题为“园艺作物生产技术改进的比较环境研究”的国际研讨会。是在Kasetsart大学举行的，以过去两年取得的成果为基础，许多参与者不仅包括这个项目的成员，还包括其他科学家。下面的题目有其他科学家参加。提出了以下主题：1)泰国园艺作物的比较环境研究2)塑料下柑橘生长的相关问题及其与热带条件下常绿果树柑橘的相关性3)对‘Delaware’葡萄和‘Kosui’日本梨的破眠研究，更好地了解休息和休眠的机制。4)气候因子对红毛丹（Nephelium lappaceum L. CV.）叶片总非结构性碳水化合物、总氮和花芽萌发的影响。荣连)。5)探索水培系统生产葡萄的方法。季节对菜用大豆生长发育的影响。7)采用低技术被动水培法生产甜瓜和番茄。8)单康唑对大花蕙兰生长和流动响应的影响。9)Ri-T dna诱导观赏植物遗传转化及矮化表型。10)莪术（Curcuma alismatifolia Gagnep.）离体繁殖。根据我们的结论，建议我们应该协调和集中各个方案的努力在某一重要性。此外，在建立可持续农业的基础上，对种植制度进行比较环境研究也将成为进一步的研究方向。少

During this project performed, mutual scientist exchanges were conducted with total eight times. While these exchanges were done, numerous aspects concerning horticultural crops production and their related comparative environmental study were suggested with respect to each scheme, namely fruit trees, vegetables, and ornamental flowers, as follows ; 1) It is found that a chilling requirement is not enough to break a doumancy of temperate deciduous fruit trees on the northern highland in thailand, so that an improvement of rest-breaking technique is expectative, 2) To carry out a hydroponics for vegetables production in the tropical regions, their place survey and selection will be needed by reason of the water quality and resource problems, 3) They are hopeful of a development of new technology such as in vitro culture and chemical regulation on new varieties of ornamental flowers in Thailand.In 1993, international symposium titled " Comparative environmental studies on the improvement … More of production techiques in horticultural crops. " was held at Kasetsart University on the base of results obtained during past two years, in which many participants including not only the members of this project but other scientists attended. the following subject but other scientists attended. the following subjects were presented ;1) Comparative environmental studies on horticultural crops in Thailand.2) Problems related to the growing of citrus under plastic and their relevance to citrus as evergreen fruit trees under tropical conditions.3) Studies on rest-breaking of 'Delaware' grape and 'Kosui' Japanese pear for better unstanding of the mechanism of rest and dormancy.4) Effects of climatic factors on total nonstructural carbohydrates, total nitrogen in leaf and flower bud initiation of rambutan ( Nephelium lappaceum L. CV. Rong Rien ).5) Exploring methods of grape production using hydroponic system.6) Seasonal effects on growth and development of vegetable soybean.7) Melon and tomato production using low technology passive hydroponics.8) Effect of uniconazole on growth and flowing response of Cymbidium.9) Genetic transformation of ornamental plants and dwarf phenotype induced by Ri-T DNA.10) In vitro propagation of patumma ( Curcuma alismatifolia Gagnep.).According to our conclusion, it is suggested that we should harmonize and concentrate individual schemes' efforts upon the certain importance. Moreover, comparative environmental study on cropping system in reference to establishment of sustainable agriculture will be expected as a further studies. Less