scholarly journals Effect of temperature on sex expression in onion (Allium cepa L.).

1978 ◽  
Vol 26 (1) ◽  
pp. 41-44
Author(s):  
Q.P. van der Meer ◽  
J.L. van Bennekom
Keyword(s):  
Critical Temperature ◽  
Male Sterility ◽  
Allium Cepa ◽  
Constant Temperature ◽  
Sex Expression ◽  
Effect Of Temperature ◽  
Early Stages ◽  
Allium Cepa L ◽  
Increasing Temperature ◽  
B Lines

At the onset of bolting, eleven populations of the variety Wolska were placed in the greenhouse at constant temperatures of 14, 17, 20 or 23 deg C. The percentage of male-fertile plants increased with increasing temperature, the critical temperature appearing to be 17 deg C. The transference of plants from outside to a constant temperature of 14 deg C, three or six weeks after the initiation of bolting, showed the effect of temperature to decrease with time, suggesting that induction of male sterility occurs in the early stages of bolting. Observations on an unspecified number of A and B lines of the variety Rijnsburg at 14, 20 and 23 deg C indicated that instability of sex expression occurs only in B lines. (Abstract retrieved from CAB Abstracts by CABI’s permission)

Effect of temperature on the occurrence of male sterility in onion (Allium cepa L.)

Euphytica ◽  
1969 ◽  
Vol 18 (3) ◽  
pp. 389-394 ◽  
Author(s):  
Q. P. Van Der Meer ◽  
J. L. Van Bennekom
Keyword(s):  
Male Sterility ◽  
Allium Cepa ◽  
Effect Of Temperature ◽  
Allium Cepa L

THE EFFECT OF TEMPERATURE ON MEIOSIS AND POLLEN DEVELOPMENT IN WHEAT AND RYE

1972 ◽  
Vol 14 (3) ◽  
pp. 615-624 ◽  
Author(s):  
M. D. Bennett ◽  
J. B. Smith ◽  
R. Kemble
Keyword(s):  
Male Sterility ◽  
Chinese Spring ◽  
Pollen Development ◽  
Effect Of Temperature ◽  
Maturation Time ◽  
Pollen Maturation ◽  
Cereal Breeding ◽  
Chinese Spring Wheat ◽  
Increasing Temperature ◽  
Temperature Responses

The durations of meiosis and pollen development were estimated in Petkus Spring rye and Chinese Spring wheat grown at 15, 20 and 25 °C. Over the range 15-25 °C, meiotic duration and pollen maturation time decreased with increasing temperature and the ratio between the durations of these stages at 25 °C and at 15 °C (Q10) indicated that the temperature responses of meiotic and pollen development were similar in both species. Both within and between species meiosis and pollen maturation had constant relative durations at each temperature. The effect of low temperature on the duration of meiosis and pollen development was similar in Holdfast, an extreme type of winter wheat, as in Chinese Spring. The relevance of these results to hybrid cereal breeding are mentioned. In plants grown at 25 °C, abnormal meiotic and pollen development resulting in male sterility was seen in some anthers. The cause of male sterility appeared to be thickening of tapetal cell walls concurrent with abnormal late meiotic development in PMC's.

EFFECT OF TEMPERATURE ON WATER SORPTION EQUILIBRIUM OF ONION (ALLIUM CEPA L)

2000 ◽  
Vol 18 (9) ◽  
pp. 2117-2129 ◽  
Author(s):  
E. Adam ◽  
W. Mühlbaucr ◽  
A. Esper ◽  
W. Wolf ◽  
W. Spieβ
Keyword(s):  
Allium Cepa ◽  
Water Sorption ◽  
Effect Of Temperature ◽  
Sorption Equilibrium ◽  
Allium Cepa L

Effect of Temperature and Photoperiod on Bulbing of the Common Onion (Allium Cepa L.) Under Arid Tropical Conditions of the Sudan

1967 ◽  
Vol 3 (2) ◽  
pp. 137-142 ◽  
Author(s):  
Abdalla A. Abdalla
Keyword(s):  
High Temperature ◽  
Allium Cepa ◽  
Seasonal Variations ◽  
Effect Of Temperature ◽  
Considerable Influence ◽  
Onion Plant ◽  
Allium Cepa L ◽  
Tropical Conditions ◽  
The Common ◽  
Common Onion

SummaryUnder the arid tropical conditions of the Sudan, where seasonal variations in photoperiod are small but where temperatures are high, there is evidence from the performance of both local and introduced onion varieties that temperature has considerable influence on bulbing. The onset of bulbing does not prohibit the emergence of bladed leaves under such high temperature conditions. The size of the onion plant may be an important factor in the bulbing response under conditions of high temperature and small variations in photoperiod.

Effects of temperature and day length on cytoplasmic male sterility in cotton (Gossypium)

1974 ◽  
Vol 25 (3) ◽  
pp. 443 ◽  
Author(s):  
DR Marshall ◽  
NJ Thompson ◽  
GH Nicholls ◽  
CM Patrick
Keyword(s):  
Male Sterility ◽  
Cotton Seed ◽  
Day Length ◽  
Male Sterile ◽  
Temperature Regimes ◽  
Minor Degree ◽  
Tropical Areas ◽  
Effects Of Temperature ◽  
Increasing Temperature ◽  
B Lines

Temperature and day length were shown to affect, to a major and minor degree respectively, the expression of male sterility in G. hirsutum stocks carrying G. anomalum or G. arboreum cytoplasms. Generally, sterility increased with increasing temperature and day length. Day temperatures above 33°C were required for the consistent expression of male sterility in the sterile A lines tested, while the maintainer, or B, lines became completely sterile at day temperatures above 36�. It was concluded that while the production of hybrid cotton seed by means of the sterile A lines currently available may be feasible in some tropical areas of Australia, it would be desirable to develop genotypes in which the cytoplasmic male sterile character is stable under a much wider set of temperature regimes.

Sign in / Sign up

Export Citation Format

Share Document