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Studies on tillering in orchard grass dactylis glomerata part 4 on the relationships between plant density and tiller composition and seasonal changes of the number of leaves and leaf primordia of the tillers



Studies on tillering in orchard grass dactylis glomerata part 4 on the relationships between plant density and tiller composition and seasonal changes of the number of leaves and leaf primordia of the tillers



Research Bulletin of Obihiro University Series I 10(2): 493-506



Two orchardgrass swards of different density (100 plants/m2 and 900 plants/m2) were in the 1st cutting stage. Dense planting suppressed the elongation of the tillers of high position on secondary and tertiary tillers. The number of tillers per plant was greater in the low-density sward; the tillers consisted of reproductive and vegetative types. The high density sward consisted only of vegetative tillers. The yield of existing tillers was higher than that of new tillers. The number of leaf primordia at the leaf base decreased regularly from the lower node at the stage of completion of the development of the tiller bud. The tiller bud seemed highly influenced by environmental conditions. The tillers of the lower node of the mother shoot appeared irregularly. There was some variation in the degrees of tiller growth.

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Studies on tillering in orchardgrass (Dactylis glomerata L.). 4. On the relationship between plant density and tiller composition, and seasonal changes of the number of leaves and leaf primordia of the tillers. Research Bulletin of Obihiro University, 1 10(2): 493-505, 1977

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