Seasonal Changes in Berry Growth and Photosynthetic Rate of Leaves of ^|^lsquo;Muscat of Alxandria^|^rsquo; Grapes

Takagi, Nobutomo; Inoue, Jokichi

doi:10.2503/jjshs.51.286

Cited by 2 publications

(1 citation statement)

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“…Mg content tended to be higher in lateral leaves than it was in primary leaves but no such differences were found in P, K and Ca contents. Anatomically, no differences were found between primary and lateral leaves with respect to the thickness of the various tissues ( Kumashiro et al (1990), and Takagi and Inoue (1982) reported that a peak of photosynthetic activity of grape leaves occurred when the leaves became fully expanded. In Japan, primary leaves of grapevine near the cluster unfold in the mid-April, Matsui et al (1985) tracted the distribution of "C-assimilate in potted 'Delaware' grapevines after exposure to 14CO2, they found that the amount of 14C-assimilate translocated into berrries became maximum at the early period of stage III; the rate of import was minimum at harvest.…”

Section: Resultsmentioning

confidence: 99%

Contribution of Lateral and Primary Leaves to the Development and Quality of 'Kyoho' Grape Berry

Hirano

Noda

Hasegawa³

et al. 1994

Engei Gakkai zasshi

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SummaryThe contribution of lateral and primary leaves to the growth and quality of 'Kyoho' (Vitis vinifera × V. labrusca) berries was investigated. The total leaf area on each bearing shoot was adjusted to ca. 1500 cm2 by removing primary or lateral leaves at veraison so that the percentage of lateral leaf area (LL) beyond or distal to the cluster was : ca. 100 (100 -LL), 70 (70 -LL), 30 (30 -LL), and 0 (0 -LL) of the ca. 1000 cm2.The net photosynthetic rate (Pn) of the primary and lateral leaves on treated and intact shoots were determined.1. The berries on 100-and 70 -LL shoots ripened faster than they did on 30-and 0 -LL shoots. Berries on 100-and 70 -LL shoots accumulated total soluble solids (TSS) and anthocyanin faster than they did on 30-and 0 -LL shoots. Contrarily, titratable acidity of the berries on 100-and 70 -LL shoots decreased more rapidly than they did on 30-and 0 -LL shoots.2. During the ripening stage of the berry, the Pn of lateral leaves was faster than that of primary leaves. The Pn of basal primary leaves was significantly slower which may be responsible for the retarded ripening of berries on 0 -LL shoot.3. No significant difference was found in the leaf structure or the mineral nutrient content between primary and lateral leaves when measured before the veraison.

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Section: Resultsmentioning

confidence: 99%