Department of Genetics and Plant Breeding, Marathwada Agricultural University, 431 402, Parbhani, India.
Theor Appl Genet. 1985 Nov;71(1):122-5. doi: 10.1007/BF00278263.
Genetic studies on radiation-induced chlorina and variegated mutants of okra (Abelmoschus esculentus (L.) Moench) revealed the existence of an unstable gene. The normal green color of the leaves is controlled by duplicate genes C1 and C2, either of which produces the green colour. The chlorina plants are C 1 C 1 C 2 C 2. The allele c 1 (v) is dominant to both C 1 and C 2 but is unstable. The homozygote c 1 (v) c 1 (v) c 2 c 2 is a normal green while the heterozygote c i (v) c 1 c 2 c 2 has a variegated phenotype as a result of the mutation of c 1 (v) to c 1 during development. In green plants with a c 1 (v) c{sh1/v}c 2 c 2 genotype, the autonomous mutation of one of the c 1 (v) alleles to c 1 may take place at the pre-meiotic stage. In the variegated genotype (c 1 (v) c 1 c 2 c 2), the mutation of c 1 to c 1 (v) may take place in early ontogeny, thus producing green plants. The allele C 1, when associated with c 1 (v) in a heterozygous condition, mutates to c 1 at the pre-meiotic stage even in the presence of the allele C 2.
对黄秋葵（Abelmoschus esculentus（L.）Moench）辐射诱导的叶绿素缺失和斑驳突变体的遗传研究表明，存在一个不稳定的基因。叶片的正常绿色由重复基因 C1 和 C2 控制，其中任何一个都能产生绿色。叶绿素缺失植物是 C1C1C2C2。等位基因 c1（v）对 C1 和 C2 都是显性的，但不稳定。纯合子 c1（v）c1（v）c2c2 是正常的绿色，而杂合子 c1（v）c1c2c2 由于 c1（v）在发育过程中突变为 c1，表现出斑驳的表型。在具有 c1（v）c{sh1/v}c2c2 基因型的绿色植物中，c1（v）等位基因之一在减数分裂前阶段可能会自主突变为 c1。在斑驳基因型（c1（v）c1c2c2）中，c1 在早期个体发生过程中突变为 c1（v），从而产生绿色植物。等位基因 C1 在杂合状态下与 c1（v）相关联时，即使存在等位基因 C2，也会在减数分裂前阶段突变为 c1。
