Articles
DIFFERENCES IN SEEDINESS, FRUIT QUALITY AND LEAF CHARACTER OF JAPANESE PERSIMMONS ´TAISHU´ AND ´MATSUMOTOWASE-FUYU´
Article number
685_13
Pages
119 – 124
Language
English
Abstract
Experiments were conducted to determine the differences of seediness, fruit quality and leaf characters in Japanese persimmons Taishu, a promising new medium-maturing cultivar of pollination constant non-astringent (PCNA) type and Matsumotowase-Fuyu, the major medium-maturing cultivar of PCNA type in Japan.
Two-year-old Taishu top-grafted on 20-year-old Saijo (TG-TS), 7-year-old Taishu (TS), and 22-year-old Matsumotowase-Fuyu (MF), all with Zenjimaru as a pollinizer, were used for the study.
The harvest date of TG-TS and TS were 13 days and 6 days earlier than that of MF (20 Oct.). At harvest when the color chart values of fruit skin of TG-TS and TS were about 4.5 and those values of MF were 5.5, fruit weights of TG-TS and TS were both heavier than that of MF. Soluble solid contents of TG-TS were the highest, and that of TS was higher than that of MF. Numbers of perfect seed of TG-TS and TS were 1.8 and 1.6, respectively, being fewer than MF (4.8). All the cultivars contained a few imperfect seeds.
Therefore, total seeds in TG-TS and TS were much fewer than that of MF. Weights of perfect seed in TG-TS and TS were 1.05 g and 1.14 g, respectively, and those were lower than that in MF (1.46g). Weights of imperfect seed of TG-TS and TS were also lower than that of MF. The values of seed width to seed length of TG-TS and TS were 0.59 and 0.61, respectively, which were smaller than that of MF (0.75). The values of leaf width to leaf length in TG-TS and TS were 0.71 and 0.70, respectively, which were higher than that of MF (0.57). Specific leaf weights (leaf dry weight per leaf area) of TG-TS and TS were 9.4 mgcm-2 and 9.8 mgcm-2, respectively, and those values were similar compared with that of MF (9.6 mgcm-2). Leaf flesh weight and leaf area of TG-TS were higher than those of TS and MF. It was suggested that lower seediness, earlier maturing and higher soluble solid contents of TG-TS and TS than MF depended on genetic character.
Earlier maturity and higher soluble solids were closely related to higher leaf area.
Two-year-old Taishu top-grafted on 20-year-old Saijo (TG-TS), 7-year-old Taishu (TS), and 22-year-old Matsumotowase-Fuyu (MF), all with Zenjimaru as a pollinizer, were used for the study.
The harvest date of TG-TS and TS were 13 days and 6 days earlier than that of MF (20 Oct.). At harvest when the color chart values of fruit skin of TG-TS and TS were about 4.5 and those values of MF were 5.5, fruit weights of TG-TS and TS were both heavier than that of MF. Soluble solid contents of TG-TS were the highest, and that of TS was higher than that of MF. Numbers of perfect seed of TG-TS and TS were 1.8 and 1.6, respectively, being fewer than MF (4.8). All the cultivars contained a few imperfect seeds.
Therefore, total seeds in TG-TS and TS were much fewer than that of MF. Weights of perfect seed in TG-TS and TS were 1.05 g and 1.14 g, respectively, and those were lower than that in MF (1.46g). Weights of imperfect seed of TG-TS and TS were also lower than that of MF. The values of seed width to seed length of TG-TS and TS were 0.59 and 0.61, respectively, which were smaller than that of MF (0.75). The values of leaf width to leaf length in TG-TS and TS were 0.71 and 0.70, respectively, which were higher than that of MF (0.57). Specific leaf weights (leaf dry weight per leaf area) of TG-TS and TS were 9.4 mgcm-2 and 9.8 mgcm-2, respectively, and those values were similar compared with that of MF (9.6 mgcm-2). Leaf flesh weight and leaf area of TG-TS were higher than those of TS and MF. It was suggested that lower seediness, earlier maturing and higher soluble solid contents of TG-TS and TS than MF depended on genetic character.
Earlier maturity and higher soluble solids were closely related to higher leaf area.
Publication
Authors
K. Hasegawa, K. Hamada, T. Ogata, A. Kitajima
Keywords
Diospyros kaki, imperfect seed, leaf area, maturity, perfect seed, soluble solid concentration
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