| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
Sustained improvement in productivity is necessary to achieve high quality and stable supply of agricultural production in the future. In this study, we aimed to identify the genetic basis for controlling the number of grains per spike for improving the yeild in domestic malting barley varieties.
QTL analysis of the number of grains per spike using segregating populations derived from a cross between 'Haruna Nijo' and 'Hayakiso 2' revealed that a large number of QTL with minor effects accumulate in the background of malting varieties to increase the number of grains per spike.
The heritability of the number of grains per spike is relative high (0.80-0.81), and breeding of the number of grains per spike in the domestic malting variety 'Haruna Nijo' is possible, but it is necessary to develop an alternative breeding method to the conventional pyramidal breeding.
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