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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : The Impact of Climatic Variability on Phenological Change,Yield and Fruit Quality of Mangosteen in Phatthalung Province, Southern Thailand) ผู้เขียน: Sakulrat Apiratikorn, Sayan Sdoodee, ลดาวัลย์ เลิศเลอวงศ์, Sopon Rongsawat สื่อสิ่งพิมพ์:pdf AbstractSouthern Thailand is a traditional area for tropical fruit plantations. Recently, the phenology in many fruit trees, including mangosteen, has been changed due to climatic variability. Therefore, the impact of climatic variability on phenological change, yield and quality of mangosteen needs to be investigated. In 2008, a study was established in an orchard in Phatthalung province, southern Thailand. Eighteen-year old mangosteen trees with 8 ? 8 m spacing were used to investigate fl owering during the in-season, off-season and even, alternate bearing during three consecutive years (2008–2010). The 30- year weather data from 1981 to 2010 showed trends of change in the annual rainfall, the number of rainy days, and the maximum and minimum temperature. A marked change in rainfall distribution affected the phenological change in fl owering, productivity and fruit quality. In 2008 and 2009, the mangosteen trees experienced the required dry period that regulates fl oral induction before fl owering. Thus, fl owering was found in both the in-season and off-season. However, in 2010, a prolonged drought in summer followed by rain during July–August caused leaf fl ushing instead of fl owering and this resulted in no off-season fruit production. This indicated that climatic variability resulted in a phenological change of mangosteen in Phatthalung province, southern Thailand where there is usually off-season production. In addition, climatic variability affected the fruit yield and fruit quality of mangosteen. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Changes in Ethylene and Total Nonstructural Carbohydrates Content in Stem Apex Prior to Leaf Flushing of Marian Plum (Bouea burmanica Griff.) cv. Toon Klaow) ผู้เขียน:ลดาวัลย์ เลิศเลอวงศ์, Tanart Thunyarpar,  ดร.สุรนันต์ สุภัทรพันธุ์, ศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractChanges in ethylene and total nonstructural carbohydrate (TNC) content in stem apex prior to leaf flushing of marian plum (Bouea burmanica Griff.) cv. Toon Klaow were studied. It was found that ethylene concentration in the intercellular space was low and remained constant between the 4th to the 1st week prior to leaf flushing but the level increased to the maximum at leaf flush. Whereas, the TNC content reached the maximum level at the 4th week before leaf flushing, then decreased linearly to the minimal level at the week of leaf flushing. |
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