Efficacy of Irrigation Interval after Anthesis on Grain Quality, Alkali Digestion, and Gel Consistency of Rice

Ramin Rayee, Tran Dang Xuan, Tran Dang Khanh, Hoang-Dung Tran and Kakar Kifayatullah
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Ramin Rayee: Graduate School for Advanced Science and Engineering, Hiroshima University, Hiroshima 739-8529, Japan
Tran Dang Xuan: Graduate School for Advanced Science and Engineering, Hiroshima University, Hiroshima 739-8529, Japan
Tran Dang Khanh: Agricultural Genetics Institute, Pham Van Dong Street, Hanoi 122000, Vietnam
Hoang-Dung Tran: Faculty of Biotechnology, Nguyen Tat Thanh University, Ho Chi Minh 72820, Vietnam
Kakar Kifayatullah: Graduate School for Advanced Science and Engineering, Hiroshima University, Hiroshima 739-8529, Japan

Agriculture, 2021, vol. 11, issue 4, 1-9

Abstract: The management of amylose and protein contents and cooking quality are the main challenges in rice macronutrients and quality improvement. This experiment was conducted to examine the rice grain quality, alkali digestion, and gel consistency responses to irrigation interval after anthesis. Three rice varieties (K1, K3, and K4) were subjected to different irrigation intervals (1, 2, and 3 d) after anthesis. The findings of this study showed that the protein content was markedly increased from 6.53–6.63% to 9.93–10.16%, whilst the amylose content was decreased significantly from 22.00–22.43% to 16.33–17.56% under stressed treatments at irrigation intervals, whilst the quantity of fatty acids was not affected. The 3-d irrigation interval recorded the highest protein content but the lowest amylose value. In addition, this treatment shows lower gelatinization temperature, but it is negatively associated with hard gel consistency under irrigation interval. This study highlights that the water management following a 3-d irrigation interval from anthesis is a useful and simple treatment to improve rice nutrients and grain cooking quality.

Keywords: irrigation interval; protein; amylose; alkali digestion; gel consistency (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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