Fungicides affect the production of extracellular mucilaginous material (ECMM) and the peripheral growth unit (PGU) in two wood-rotting basidiomycetes

The growth and branching patterns of the main axis of 6-year-old sessile oak, growing in a natural regeneration in the north of France, were analysed each year retrospectively according to three increasing canopy density conditions: large gap, small gap, and dense canopy. Increasing gap size is associated with an increase in the total height, basal diameter, branching probability, and global polycyclism rate of the trees. At the growth unit or annual shoot level, from dense canopy to large gaps these botanical entities also show an increase in their total length, number of nodes, polycyclism, and branching rate as well as mean number of branches and mean internode length. A discussion of our results revealed some endogenous features of growth and branching patterns in young sessile oak trees. It is also shown that increasing canopy density generally tends to reduce the expression of the endogenous architectural sequence of differentiation of young sessile oak trees. Young trees growing below dense canopy thus seem to be "delayed" in their sequence of differentiation and appear to be in a "waiting" status, whereas young trees growing in large gaps exhibit an architecture very similar to trees growing in nurseries under nonlimiting growth conditions.Key words: architecture, Quercus petraea, growth, morphology, canopy density.

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ALTERNATING PATTERNS OF MANGO - QUANTIFICATION AT THE GROWTH UNIT LEVEL ON FOUR CULTIVARS

Acta Horticulturae ◽

10.17660/actahortic.2014.1058.32 ◽

2014 ◽

pp. 277-284 ◽

Cited By ~ 2

Author(s):

A. Dambreville ◽

F. Normand ◽

P.-E. Lauri

Keyword(s):

Growth Unit ◽

Unit Level

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Similarities and gradients in growth unit branching patterns during ontogeny in 'Fuji' apple trees: a stochastic approach

Journal of Experimental Botany ◽

10.1093/jxb/erl075 ◽

2006 ◽

Vol 57 (12) ◽

pp. 3131-3143 ◽

Cited By ~ 48

Author(s):

M. Renton

Keyword(s):

Stochastic Approach ◽

Growth Unit ◽

Apple Trees ◽

Branching Patterns ◽

Fuji Apple

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INVESTIGATION OF THE MODE OF GROWTH UNIT FOR HYDROTHERMAL SYNTHESIS OF BARIUM TITANATE CRYSTALLITES

Acta Physica Sinica ◽

10.7498/aps.45.2082 ◽

1996 ◽

Vol 45 (12) ◽

pp. 2082

Author(s):

YUAN RU-LIN ◽

SHI ER-WEI ◽

XIA CHANG-TAI ◽

WANG BU-GUO ◽

ZHONG WEI-ZHOU

Keyword(s):

Hydrothermal Synthesis ◽

Barium Titanate ◽

Growth Unit ◽

Synthesis Of Barium Titanate

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The Effect of Irradiance, Defoliation, and Bulb Size on Flowering of Nerine bowdenii W. Watson (Amaryllidaceae)

Journal of the American Society for Horticultural Science ◽

10.21273/jashs.121.1.115 ◽

1996 ◽

Vol 121 (1) ◽

pp. 115-122 ◽

Cited By ~ 7

Author(s):

K.I. Theron ◽

G. Jacobs

Keyword(s):

Developmental Stage ◽

Dry Weight ◽

Growing Season ◽

Growth Unit ◽

Growing Seasons ◽

Number Of Leaves

Large Nerine bowdenii bulbs (>14 cm in circumference) were exposed to low ligbt intensities for different periods during two successive growing seasons. The flowering percentage and number of florets in the current season's inflorescence were recorded at anthesis. Small and large bulbs were subjected to continual defoliation starting at different times during the growing season. Bulbs were dissected at planting (26 Sept. 1992) and on 12 Jan. 1993 (nondefoliated control bulbs) to determine growth and developmental stage. At anthesis, inflorescences were harvested and the florets per inflorescence were counted. After anthesis in the fall, all bulbs were dissected and the following variables recorded: 1) percentage flowering, quiescence, or abortion of the current season's inflorescence; 2) developmental stage of quiescent inflorescences; 3) number of florets in the outermost inflorescence; 4) developmental stage of the innermost inflorescence; 5) number of leaves or leaf bases in each growth unit; 6) number of daughter bulbs; and 7) dry weight of new leaf bases. There were three reasons for nonflowering of the bulbs, viz., failure to initiate an inflorescence, inflorescences remaining quiescent, and inflorescence abortion. Individual florets that had not reached stage “Late G” (gynoecium elongated, carpels fused) at the start of rapid inflorescence elongation aborted. The more florets that aborted, the greater the probability that the entire inflorescence aborted. The inflorescence was more vulnerable to stress during the first half of the growing season due to its relatively weak position in the hierarchy of sinks within the bulb.

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