ITHENTICATE: Comparison of Young Seedling Growth under Lower Nutrient Concentrations in Culture Solution among Rice Cultivars

Kadir, Sabaruddin (2011) ITHENTICATE: Comparison of Young Seedling Growth under Lower Nutrient Concentrations in Culture Solution among Rice Cultivars. Mie University, Japan, Proceeding International Symposium on "New Frontier of Sustainable agriculture and Rural Development in East and Southeast Asia".

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Abstract

The growth of rice seedlings under lower nutrient concentrations was compared among 12 cultivars. The seedlings were cultivated under 3 levels of nutrient concentrations of Kimura B solution. The results showed various responses of cultivars in total dry matter weight (TDW) and relative growth rate (RGR). Therefore, they were classified into 4 groups based on RGR change: group A (IR28, Dular, Toyonishiki, Akebono and Owarihatamochi), B (Koshihikari), C (IR 60, Pokkali, Kasalath, Rikuto norin 2l), and D (IR 42 and IR 50). To analyze the cause of variations in growth rate among them, the correlation between leaf area ratio (LAR) and net assimilation rate (NAR) was investigated. Total nitrogen concentration in plant tissue and nitrogen content per unit leaf area were also examined. Under moderate nutrient concentration (50% strength), physiological response was regarded more crucial in determining growth rate in this level. Then, Pokkali, Kasalath, Dular and Rikuto Norin 2l were considered as the best cultivars attributed to their ability in maintaining NAR and the amount of nitrogen accumulated in their leaves. However, when the nutrient concentration decreased to 25% of stength, morphological characteristics had more influence to the seedlings growth. Therefore, Dular and Owarihatamochi then were considered as good cultivars in this level.

Item Type:	Other
Subjects:	#3 Repository of Lecturer Academic Credit Systems (TPAK) > Results of Ithenticate Plagiarism and Similarity Checker
Divisions:	05-Faculty of Agriculture > 54104-Botany (Plant Science) (S2)
Depositing User:	Ph.D. Sabaruddin Kadir
Date Deposited:	25 Apr 2023 04:41
Last Modified:	25 Apr 2023 04:41
URI:	http://repository.unsri.ac.id/id/eprint/97167

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