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. 1985 Sep;70(6):628-33.
doi: 10.1007/BF00252288.

Effect of carbon dioxide and relative humidity on self incompatibility in cauliflower, Brassica oleracea

A Palloix  1 , Y Herve, R B Knox, C Dumas
Affiliations

Effect of carbon dioxide and relative humidity on self incompatibility in cauliflower, Brassica oleracea

A Palloix et al. Theor Appl Genet. 1985 Sep.

Abstract

The events of the progamic phase of fertilization have been monitored by in vitro experiments in self compatible (SC), partial self-incompatible (PSI) and self incompatible (SI) lines. The duration of the progamic phase is about 30 h. Treatment with low concentrations of CO2 (3 to 5%) at high relative humidity (rH, 100%) had the following effects: pollen quality, which declines normally during flower ageing, was prematurely reduced; pollen adhesion and germination, both low in SI matings, were increased; the stigma callose response in SI matings was reduced to the low level of SC matings; and the number of pollen tubes in the style after SI matings significantly increased. CO2 concentrations of 4 to 6% applied for 8, 16 or 24 h at 100% rH proved to be the most effective treatment for blocking the SI response in cauliflower.

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