Identification of Chromosomal Regions Controlling the Leaf Photosynthetic Rate in Rice by Using a Progeny from Japonica and High-yielding Indica Varieties

Stomatal Conductance Is Essential for Higher Yield Potential of C3Crops

“…Significant progress has been made in the last 20 years to identify genomic regions involved in the regulation of g s in rice (Price et al, 1997;Adachi et al, 2011a;Gu et al, 2012), cotton (Ulloa et al, 2000) and wheat (Pinto et al, 2010;Aminian et al, 2011;Panio et al, 2013). However, limited fine mapping and molecular characterization of these Quantitative Trait Loci (QTLs) have been made or completed.…”

Agronomic Traits for High Productivity of Rice Grown in Aerobic Culture in Progeny of a Japonica Cultivar and a High-Yielding Indica Cultivar

“…Habataki has a higher photosynthetic rate than Sasanishiki (Adachi et al, 2011;Ohsumi et al, 2011) and a larger spikelet number per panicle (Ando et al, 2008;Ohsumi et al, 2011), which led to higher grain yield in Habataki (Katsura and Nakaide, 2011). Therefore, most of the CSSLs would be expected to show a higher grain yield than Sasanishiki, because the CSSLs have chromosome regions containing one or more QTLs for grain yield from Habataki.…”

Leaf Photosynthesis and Its Genetic Improvement from the Perspective of Energy Flow and CO2Diffusion

“…Therefore, to use these resources for breeding, we should elucidate the physiological factors that determine the observed varietal differences in P n and identify the QTLs that control them (Flood et al, 2011). This section presents the physiological and genetic bases underlying the variation in P n found in some rice lines that have been examined by Adachi et al (2011aAdachi et al ( , 2011bAdachi et al ( , 2011cAdachi et al ( , 2013 and Taylaran et al (2011) and the prospects for future improvement of rice photosynthesis.…”

“…We have just begun QTL analysis using populations derived from a cross between Koshihikari and Takanari. Genetic analysis of populations derived from a cross between Koshihikari and the indica cultivar Habataki, which shows comparable P n to Takanari, allowed the mapping four QTL regions associated with P n on chromosomes 4, 5, 8 and 11 (Adachi et al, 2011a(Adachi et al, , 2011b. The Habataki segments of chromosome 5 and 11 were found to be responsible for increasing LNC, that of chromosome 8 for increasing g s and that of chromosome 4 for both traits.…”