 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Phenotypic and Genotypic Correlations between Each Pair of Rice Characters under Yellow Orange Leaf Virus Infection) ผู้เขียน: Boonhong Chongkid,  นายชัยฤกษ์ มณีพงษ์, รองศาสตราจารย์ , นายณรงค์ สิงห์บุระอุดม, รองศาสตราจารย์ , Watchara Purivirojkul สื่อสิ่งพิมพ์:pdf AbstractEight rice varieties, ARC11554, GS10719, Suphan Buri 60 (SPR 60), RD9, RD1, RD23, RD7 and TN1 in addition to their 28 F subscript 1 s obtained from the diallel crossing among the 8 parents were evaluated for reaction to the yellow orange leaf virus infection based on percent leaf yellowing, plant height, number of panicle bearing tillers, and grain yield per plant. ARC11554 and GS10719 are classified as resistant, SPR60 and RD9 as moderately resistant, RD1 and RD23 as moderately susceptible, and RD7 and TN1 as susceptible Phenotypic correlations between each pair of characters were estimated using method described by Griffing (1956). The results showed that percent leaf yellowing was negatively correlated with plant height, number of panicle bearing tillers, and grain yield per plant. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effects of Vanadium on Rice Growth and Vanadium Accumulation in Rice Tissues) ผู้เขียน:Boonhong Chongkid, Naramol Vachirapattama, Yaowapha Jirakiattikul สื่อสิ่งพิมพ์:pdf AbstractThe experiment on effects of vanadium on rice growth in hydroponic culture with the Mckeehen’s nutrient solution formulae was conducted during September 5 to January 3, 2005 at the Department of Agricultural Technology, Thammasat University, Rangsit Campus, Thailand. Vanadium of 80 mg/l caused the lowest stem height, stem diameter, fresh and dried stem weights, and fresh and dried root weights of 84.21 cm., 1.98 cm., 24.44 and 9.61 g, and 20.59 and 1.47 g, respectively. Without Vanadium, a tendency to give the longest root of 48.85 cm, the highest number of panicles per hill of 11.00, the highest number of seeds per panicle of 222.18, the highest weight of seeds per hill of 58.55 g, and the highest 100-seed weight of 2.40 g were obtained. The two vanadium concentrations of 40 and 80 mg/l, however, caused death to the rice plant before the flowering stage. The vanadium concentrations were found in the root > leafy stem > seed, respectively. |