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 หัวเรื่อง:ผลของจิบเบอเรลลิค แอซิด ที่มีต่อการพัฒนาของเมล็ดและผลองุ่นพันธุ์ไวท์มาละกา ที่ปลูกบนดอยอินทนนท์ จังหวัดเชียงใหม่ ผู้เขียน: ดร.สุรศักดิ์ นิลนนท์, ศาสตราจารย์ ,  Raweewan Yuwansiri, Choopong Sukumalanandana, ดร.ประศาสตร์ เกื้อมณี, รองศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractThe application of gibberellic acid at a concentration of 50 ppm on inflorescences of ‘White malaga’ grape at full bloom (80% cap fall). 3 days, 5 days and 7 days after full bloom were conducted at Doi Inthanon, Chiang mai province, during January 25-31, 1993. The results showed that the application of gibberellic acid at the concentration of 50 ppm at full bloom stage reduced pollen germination. The germination of the pollen with the treated and untreated were 0-2.21% and 45.24-57.75%, respectively. Gibberellic acid at a concentration of 50 ppm at full bloom, 3 days, 5 days and 7 days after full bloom stage resulted in 98 – 100% seedlessness. The size of berries and clusters were not affected by gibberellic acid. Gibberellic acid application at all stage of inflorescences increased soluble solids and decreased acidity which allowed early harvest. |
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หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Influence of Plastic Roof on Fruit Quality and Yield of ‘Beauty Seedless’ Grape During Dry and Rainy Seasons) ผู้เขียน:Ganesh KUMAR SHRESTHA, ดร.สุรศักดิ์ นิลนนท์, ศาสตราจารย์, ดร.ลพ ภวภูตานนท์, ผู้ช่วยศาสตราจารย์ , ดร.นิรันดร์ จันทวงศ์, รองศาสตราจารย์ , Choopong Sukumalandana สื่อสิ่งพิมพ์:pdf AbstractA study on the influence of plastic roof applied from pruning to harvest, pruning to color change and flowering to color change on fruit quality, total nonstructural carbohydrate in shoot, yield, cost and returns of ‘Beauty Seedless’ grape was conducted in the Northern Thailand during dry and rainy seasons. The results showed that the vines growing under plastic roof from pruning to color change stage produced high cluster weight, number of clusters, yield and profit during both dry and rainy seasons. Moreover, the berry size and berry weight were increased and the percent of yield loss was decreased and no disease score was found during the dry season. The vines growing under plastic roof from pruning to harvest stage gave an increase in total anthocyanin content and tended to contain no disease score during the dry season. Similar trend was found in an increase in berry size, berry weight and total soluble solids and a decrease in disease score, titratable acidity and the percent of yield loss during the rainy season. No differences on the total non-structural carbohydrate content in shoot of the vines during both dry and rainy seasons were found among the treatments. The treatments applied plastic roof on vines gave higher profit than the control in both seasons. However, the control gave a marginal net profit in the dry season and a profit loss remained in the rainy season. |
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