Evaluation of yield and agronomic traits of sugarcane elite line under rain-fed conditions in the Northeastern Thailand
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Abstract
Currently, there are a few sugarcane cultivars which use in sugarcane production system of Northeastern Thailand. If a new disease and unpredictable environment occurrences, it may significantly affect sugarcane productivity. Therefore, it is necessary to provide an elite line that performs appropriate adaptation to cane production system in Northeastern Thailand. Thus the objective of this experiment was to evaluation of yield and agronomic traits of sugarcane elite line under rain-fed conditions in Northeastern Thailand. The experiment was conducted at two locations in Udon Thani and Khon Kaen province. This investigation was laid out in RCBD with four replications. Seventeen sugarcane lines were used as treatments, such as KKU99-01, KKU99-02, KKU99-03, KKU99-06, KK06-419, KK06-501, CSB07-79, CSB07-219, UT84-12, UT84-13, MPT02-187, MPT02-458, TBy28-1211, Kps01-12 and TBy28-0941, and two
check cultivars as KK3 and K88-92. Yield, sugar yield, yield components (millable cane and cane weight) and agronomic traits (cane height, stalk diameter, number of internodes and green leave and dry leave numbers) were collected at 12 months after planting. The sugarcane lines such as Kps01-12 (19.86 t/rai and 2.49 tCCS./rai) and KKU99-03 (19.18 t/rai and 1.86 tCCS./rai) can be using in this sugarcane production system which revealing a high yield, and these were no significant difference with checked cultivars. Moreover, different sugarcane elite lines were appropriate with different soil conditions as soil texture and fertility. Kps01-12, MPT02-187, KKU99-02 and KKU99-03 were identified that appropriate to low fertility and sandy soil, and TBy28-0941 was suitable for loamy sand. In addition, the correlations between cane yield and the surrogate traits such as cane hieght, stalk weight and millable cane were positive significant. So, these traits are able to contribute to high yield in this sugarcane production system.
