Echinochloa Crus-Galli

14,000,000 Leading Edge Experts on the ideXlab platform

Scan Science and Technology

Contact Leading Edge Experts & Companies

Scan Science and Technology

Contact Leading Edge Experts & Companies

The Experts below are selected from a list of 4551 Experts worldwide ranked by ideXlab platform

Haibin He - One of the best experts on this subject based on the ideXlab platform.

Qi Zhang - One of the best experts on this subject based on the ideXlab platform.

Catherine Potvin - One of the best experts on this subject based on the ideXlab platform.

  • Maternally-induced modification of progeny phenotypes in the C4 weed Echinochloa Crus-Galli: An analysis of seed constituents and performance
    Oecologia, 1993
    Co-Authors: Christiane Charest, Catherine Potvin
    Abstract:

    To clarify the physiological basis of maternal inheritance we examined the effect of the thermal environment of mother plants of Echinochloa Crus-Galli on subsequent seed mass, content and quality. The same plants were grown in a warm and a cold environment until seeds were produced and, since E. Crus-Galli is a highly inbred species, the observed variation in seed production was a purely plastic response to the environment. When mother plants were grown at high temperature, average seed mass, variance and germinability were low. Cold maturation led to the production of more large seeds than warm maturing temperature. The latter seeds were deprived of reserve constituents. Seeds matured at high temperature had high concentrations of K+ and Mn2+ but lower concentrations of starch and protein.

  • Maternal Effects of Temperature on Metabolism in the C_4 Weed Echinochloa Crus-Galli
    Ecology, 1991
    Co-Authors: Catherine Potvin, Christiane Charest
    Abstract:

    This study illustrates the physiological and biochemical responses to tem- perature of maternal phenotypes of plants of Echinochloa Crus-Galli that result in different progeny phenotypes. Our results provide a physiological scenario that accounts for strong, nongenetic, maternal effects. At low temperature, the photosynthetic rates of flag leaves were reduced, while concentrations of sugars and starch were increased. These physiological modifications suggest reduced phloem translocation to the reproductive structures in plants grown under cold conditions. At high temperature, high respiration rates of inflorescences were observed during seed development. To offset the effect of ear (fruit) respiration, mother-plants grown under warm conditions would have to translocate some 30% more carbohydrates than at low temperature. Our study therefore suggests that environmentally induced modifications in simple physiological traits can account for an important reduction in resources available to reproduction. Changes in leaf starch, reducing sugars, and protein contents induced by temperature persist through the life of a second generation of plants. Biochemical modifications due to maternal effects may influence overall plant performance. For example, the higher protein concentration of seedlings grown from cold-matured seeds may enhance their cold tolerance.

  • Temperature-induced variation in reproductive success: field and control experiments with the C4 grass Echinochloa Crus-Galli
    Canadian Journal of Botany, 1991
    Co-Authors: Catherine Potvin
    Abstract:

    To examine the influence of weather patterns on the flowering of a C4 plant, 11 transplant gardens were sown with seeds of Echinochloa Crus-Galli var. Crus-Galli within and beyond the species range. Both the isolated effect of climate and the joint effect of competition and soil quality on the flowering of E. Crus-Galli were analyzed. Although vegetative growth was significantly more vigorous in the southernmost site, Echinochloa plants were able to grow actively even at high latitudes. Conversely, flowering decreased gradually from south to north. The maximum temperature in August was the best predictor of floral emergence. Data from controlled experiments confirmed that flowering of E. Crus-Galli was size independent, and temperature was shown to have an effect on biomass accumulation and allocation as well as on floral emergence. Plants grown in the coolest thermoperiod produced a small number of heavy seeds, whose germinability was superior to that of plants grown in the other temperature treatments. ...

Xiaoyan Yang - One of the best experts on this subject based on the ideXlab platform.

Jiayu Li - One of the best experts on this subject based on the ideXlab platform.

Related terms

Echinochloa Crus-Galli - 15 days free trial to Access Experts & Abstracts