In soybeans, the Y11 gene is involved in chlorophyll synthesis. Thus, in the.heterozygous condition Y11y11 , an intermediate or light-green leaf pigmentation results. Photosynthetic C02 assimilation in the light-green, on a surface area basis, has been reported to be as high or nearly as high as in the homozygous dominant, dark-green plant (Wolf, 1965; Keck et al., 1974; Cappy and Noble, 1974; Crang and Noble, 1978).
Nobel, Reginald D.
"Research notes: Photosynthetic activity in chlorophyll deficient soybean
leaves carrying the Y11 mutant,"
Soybean Genetics Newsletter: Vol. 6
, Article 43.
Available at: http://lib.dr.iastate.edu/soybeangenetics/vol6/iss1/43