Open AccessBreeding of abiotic tolerant varieties with high grain quality to meet the consumer preference at rice swampy land
Author(s) -
Indrastuti Apri Rumanti,
Nafisah
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/484/1/012029
Subject(s) - swamp , preference , salinity , agronomy , abiotic component , yield (engineering) , amylose , mathematics , horticulture , agricultural engineering , biology , food science , engineering , ecology , statistics , physics , starch , thermodynamics
Acid sulfate is common constraint in swamp rice land, however, salinity and submergence become a problem as well especially in the coastal part. Hight yielding and tolerant varieties were one of cheaper technology could be adopted by farmers to cope with the problems. Screening were the starting point in the steps of breeding programs. There were 41 lines identified tolerant to acid sulfate, while under salinity there were 37 lines had tolerant to salinity stress up to 12 dSm −1 . Among the lines, 6 promising lines were adaptive to both stresses, such as B13981E-KA-34, B14316E-KA-48, B13134-4-MR-1-KA-1, B14354E-KA-2, B14339E-KA-27, and B14357E-KA-48. Besides the yield and tolerance, grain quality was also important to be evaluated to meet consumer preference. There was variation for amylose content among the lines because Indonesian farmers had a wide range of texture preference. The selected lines have moderate amylose content, varied from 20.72 to 24.92 %. Most of the lines were slender with medium shape, and no chalkiness. There were two lines which had small shapes, such as B13983E-KA-12-2 and B13578E-KA-5-B. It seems meets the preference of Kalimantan farmers who prefer small and long-grain, as same as Siam type