Summary
It has been found that long palea, an easily identifiable trait, is attributable to two duplicate recessive genes designated lp 1 and lp 2. A new character, uneven kernel has been described, the espression of which is controlled by two dominant complementary genes, Un a and Un b. Two dominant complementary genes, Cl a and Cl b have been found controlling clustered habit.
One of the complementary genes for clustered habit, Cl a was linked with one of the complementary genes for uneven kernel, Un a with a c.o. value of 22.1 per cent. This linkage has been assigned to I linkage group in indica rice.
The long glume gene g showed 22.2 per cent linkage with oed rice gene, Rc. It was further found linked with one of the complementary genes for uneven kernel, Un b (17.8 per cent) and one of the duplicate recessive genes for long palea, lp 1 (30.2 per cent). The cross-over value between Ub b and lp 1 was 11.5 per cent. The gene order appeared to be lp 1-Un b-g-Rc. These linked genes have tentatively been assigned to IV linkage group in indica rice.
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Thakur, R., Roy, R.P. Linkage studies in indica rice, Oryza sativa L.. Euphytica 24, 511–516 (1975). https://doi.org/10.1007/BF00028221
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DOI: https://doi.org/10.1007/BF00028221