Ecology of wildrice (Zizania palustris L.) : fruit production and habitat relationships / Roger C. Garrod.
Material type:
TextSeries: Thesis. (M.Sc.)Publication details: Winnipeg, MB : University of Manitoba, 1984.Description: xiv, 164 leaves : ill. ; 28 cmOnline resources: Abstract: The fruit production characteristics of commercially viable natural stands of wildrice (Zizania palustris L.) in eastern Ontario were quantified. Data collected included stem and panicle densities, numbers of pistillate florets per panicle, fruit dry weight, proportions of mature, moderately mature, immature, undeveloped and predated fruit, and stand areas and open areas. The variance of each variable and its contribution to the amount of fruit available for harvest is described and discussed. The low proportion of fruit harvested was attributed to harvest effort and machinery inefficiency. Predation by riceworm larvae was substantial at some stands in some years. Significant variation in stem density and floret number amongst and within stands was attributed to both genotype and habitat. Genotypic variation in floret number and fruit dry weight amongst populations was demonstrated by frowing plants from six sources under the same conditions at four water depths. Plants from some sour
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Thesis(M.Sc.)--University of Manitoba, 1984.
Includes bibliographical references (leaves 133-140).
The fruit production characteristics of commercially viable natural stands of wildrice (Zizania palustris L.) in eastern Ontario were quantified. Data collected included stem and panicle densities, numbers of pistillate florets per panicle, fruit dry weight, proportions of mature, moderately mature, immature, undeveloped and predated fruit, and stand areas and open areas. The variance of each variable and its contribution to the amount of fruit available for harvest is described and discussed. The low proportion of fruit harvested was attributed to harvest effort and machinery inefficiency. Predation by riceworm larvae was substantial at some stands in some years. Significant variation in stem density and floret number amongst and within stands was attributed to both genotype and habitat. Genotypic variation in floret number and fruit dry weight amongst populations was demonstrated by frowing plants from six sources under the same conditions at four water depths. Plants from some sour