New Zealand Journal of Botany abstracts

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Overcoming incompatibility and promoting genetic recombination in flowering plants

K. K. Pandey

Genetics Unit, Grasslands Division, DSIR, Private Bag, Palmerston North, New Zealand

Abstract A critical review of observations regarding physiology of pollen-style incompatibility in plants led to the conclusion that the widely occurring evolutionary relationships between genetic systems of self-incompatibility, floral morphology, site of inhibition, and pollen cytology are best understood in the light of two-phase 5 gene physiology - S specificity determination (transcription), and 5 protein synthesis or precursor conversion (translation). Precocity may occur either in 5 gene action or in S precursor conversion and may thereby alter the relationships between various features of incompatibility. It is concluded that in sporophytic systems interspecific incompatibility substances, governed by the Primary Specificity, may be generally derived from the tapetum alone, whereas intraspecific .^//-incompatibility substances, governed by the Secondary Specificity, may be produced by both the meiocytes and the tapetum.

New Zealand Journal of Botany, 1979, Vol. 17:645-63

PDF file of entire paper: medium quality (1661K); (scanned from paper original: notes about this process)

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