Studies on the Seed Production of Soybean : Vm. The ability of phoosynthesis of F3 1ines having: different photosynthesis in their F2 generations

Responses of a Supernodulating Soybean Genotype, Sakukei 4 to Nitrogen Fertilizer

“…A similar correlation has been observed previously (Lugg and Sinclair, 1981). Leaf N content was also found to correlate with AP in F 3 progenies of crosses of various soybean cultivars (Ojima and Kawashima, 1970). Moreover, AP has been reported to correlate positively with soluble protein content of leaves in the studies comparing two (Hesketh et al, 1981) and 29 cultivars (Boon-Long et al, 1983).…”

Leaf physiology and anatomy of soybean genotypes differing in leaf photosynthetic ability

“…The efficiencies of the photochemical reactions, as judged by the slopes of the AP responses to PPFD at low levels, did not vary among lines at 28 C. This agrees with the work of Ojima and Kawashima (1970) and Dornhoff and Shibles (1974), but Watanabe (1973) found that these slopes and light saturated photosynthetic rates were correlated However, lines did not differ significantly in AP at either 2 13 or 20 nmol photons/s cm , the two points upon which the slopes were calculated, and extrapolating the AP versus PPFD curve to the axis of ordinates yielded some positive inter cepts. Therefore, there is some doubt whether differences in these slopes at 18 C are real or meaningful.…”

“…However, the efficiency of neither PET nor the PGR cycle appears to vary much among genotypes because the AP responses to PPFD at low irradiances (Ojima and Kawashima, 1970;Dornhoff and Shibles, 1974; Section I) and to (Dornhoff and Shibles, 1974; Section I) do not differ among genotypes. The efficiency with which CO2 is transferred from the cell wall to the site of fixation (r^^) may explain some of the variation.…”

“…The dependence of AP on PPFD at low irradiances, where irradiance alone limits AP, varies little among soybean geno types (Ojima and Kawashima, 1970;Dornhoff and Shibles, 1974).…”

Genetic Differentiation in Leaf and Whole Plant Photosynthetic Capacity and Unit Leaf Rate Among Clones of Phlox Paniculata

“…In species where heritabilities have been calculated, mainly crops and grasses, values range from 0.1-0. 72 (e.g., Ojima and Kawashima, 1969;Wilson and Cooper, 1969;Asay, Nelson and Horst, 1974;Crosbie, Mock and Pierce, 1977, 1981aScheiner et aI., 1984). In other species the existence (or lack) of a genetic component to single leaf photosynthetic capacity has been inferred from differences among varieties (e.g., Fischer et aI., 1981;Ellison, Derera and Pederson, 1983).…”