Genetic components of chromosome behaviour in Papaver somniferum L.

Abstract

PATRA, N. K., and CHAUHAN, S. P. 1988. Genetic components of chromosome behaviour in Papaver somniferum L. Genome, 30: 677 -679. Three nuclear variables, namely chiasma frequency, internuclear variation of chiasmata, and numerical deviations in the chromosomes of pollen mother cells, referred to as meiotic lability, were studied in 5 x 5 diallel crosses of Papaver somniferum L. Chiasma frequency and meiotic lability were controlled by both additive and dominant gene actions and internuclear chiasmata variance was controlled by the dominant component. High values for chiasma frequency and meiotic lability were dominant over their low values, whereas low values of internuclear variation of chiasmta were dominant over the corresponding high values.

Impact of mutagenesis on cytological behavior in relation to specific alkaloids in Opium Poppy (Papaver somniferumL.)

“…The overall study showed co-linearity between the treatments and chromosomal abnormalities. PATRA et al (1987), PATRA and CHAUHAN (1988) and CHAUHAN (1989) have studied cytological variations (both mitotic and meiotic) in opium poppy and emphasized that opium poppy is good material for the study of nuclear and chromosomal behaviour with respect to mitosis and meiosis. In the present study, the meiotic variation was taken up to unravel the effect of mutagens on chromosomes in addition with an apparent comparison of mutagenic effect on both the varieties with respect to alkaloidal variations and physiological damages.…”

Genome variability of plant somatic cells. 1. Variability during ontogenesis

“…Показано, что процессы геномной изменчивости в онтогенезе регу лируются генами (см. [18,[224][225][226]). Из вышеизложенного следует, что функционирование этих генов зависит, вероятно, как от внешних, так и от внутренних факторов (сигналов).…”

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“…10, № б Показано, что процессы геномной изменчивости в онтогенезе регу лируются генами (см. [18,[224][225][226]). Из вышеизложенного следует, что функционирование этих генов зависит, вероятно, как от внешних, так и от внутренних факторов (сигналов).…”