Abstract
Abstract The relationships of growth and flowering to storage of nonstructural carbohydrate reserves and the influence of the pastoral management practice of burning on these relationships have been investigated in Chionochloa rigida and C. macra on the Old Man Range, Central Otago. Growth, as measured by elongation of the youngest exposed leaf, decreased significantly with increasing altitude. It was significantly greater in C. rigida than in C. macra. Leaf dieback did not show a significant species difference, but decreased significantly with increasing altitude in C. macra. Neither new leaf nor new tiller production was significantly affected by species. The production of new tillers did, however, decrease significantly with increasing altitude in C. macra. Spring burning increased leaf elongation, relative to unburnt plants during the first two seasons after fire, C. rigida > C. macra. Leaf dieback exceeded that of unburnt plants during the season after a spring burn, but was depressed next season. Su...
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