Effects of the Number of Seeds per Berry on Fruit Growth Characteristics, Especially on the Duration of Stage II in Blueberry

Doi, Kenichi; Nozaki, Ryouichi; Takahashi, Kouji; Iwasaki, Naoko

doi:10.3390/plants7040096

Cited by 5 publications

(2 citation statements)

References 16 publications

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“…Caprification conducted using 4-day intervals increased the number of fertile seeds and showed a positive correlation with the proportion of fruits harvested before September 15. Consistent with the results obtained in the present study, Doi et al [66] indicated that differences in the pollen source or pollen dilution only affect the number of seeds included in a berry, and fruit weight and ripening are affected by the number of seeds. Moreover, the ripening period reduced when the caprifigs stored at 0 • C were used in the caprification process.…”

Section: Fruit Characteristics and Time Of Ripeningsupporting

confidence: 93%

Effects of Caprifig (Ficus carica var. caprificus) Storage Temperature and Duration on the Fruit Productivity and Quality of ‘Bursa Siyahi’ Figs

KOŞAR

Ertürk

2023

Horticulturae

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Caprification is the process of hanging caprifig fruits on edible fig trees to transfer the pollen inside the caprifig to the edible fig via the wasp (Blastophaga psenes) living in the caprifig. It needs to be repeated several times for the proper fruit set of edible figs. The present study was conducted to determine the change in the number of Blastophaga psenes, the duration of Blastophaga’s exit, and pollen viability in case the caprifigs to be used in the caprification process are stored until use. The number of Blastophaga and in vitro pollen viability were tested at day 0 (harvest day) and after 4, 8, 12, 16 and 20 days of storage at three different temperatures (0, 4, and 8 °C). Afterwards, the effect of pollination frequency on the edible fig fruit set and quality was determined by using Blastophaga psenes as a vector in the pollination of stored caprifig fruits, pollinating five times with 4-day intervals and three times with 8-day intervals. Approximately a 50% reduction in the number of B. psenes was detected after 4 (180.22), 12 (174.11) and 16 (192.66) days of caprifigs storage at 0, 4, and 8 °C, respectively. The pollen germination percentage of the caprifigs increased with storage and was higher in those stored at 8 °C (43.96%) and 4 °C (41.70%). The highest fruit set was obtained when the caprifigs stored at 4 °C (76.41%) and 8 °C (71.38%) five times with 4-day intervals were used for pollination. The pollination practice repeated five times with 4-day intervals resulted in a lower proportion of extra-large fruits with a weight of >100 g, a higher proportion of fruits with no or slight ostiole damage and early ripening of fruits. These results suggest that B. psenes and pollen viability can be preserved by storing caprifigs at 4 or 8 °C and that fruit set and fruit characteristics would be positively affected with the use of stored caprifigs in the pollination practice repeated five times with 4-day intervals.

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Section: Fruit Characteristics and Time Of Ripeningsupporting

confidence: 93%

Effects of Caprifig (Ficus carica var. caprificus) Storage Temperature and Duration on the Fruit Productivity and Quality of ‘Bursa Siyahi’ Figs

KOŞAR

Ertürk

2023

Horticulturae

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“…Ehlenfeldt (2003) proposed that a metaxenia effect that is not explained by mature seed number may be rare, if any, because negative pollen-based effects occurred more frequently than positive effects. Consistent with this suggestion, recent studies by Doi et al (2018) reported that although significant differences were found in seed numbers among fruit pollinated by different pollen sources, analysis of covariance indicated no statistically significant differences in fruit size and maturation time among fruit pollinated by different pollen sources. These reports collectively suggested that metaxenia effects on blueberry could be largely affected by the pollen source-dependent mature seed number.…”

Section: Introductionsupporting

confidence: 63%

Insights into the Physiological and Molecular Mechanisms Underlying Highbush Blueberry Fruit Growth Affected by the Pollen Source

et al. 2022

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Pollination is an important factor affecting fruit development in highbush blueberry (Vaccinium corymbosum L.). In general, planting several different blueberry cultivars increases the chances of cross-pollination and ensures high-quality fruit production. However, little is known about the effects of the pollen source on fruit development in blueberry. The aims of this study were: 1) to understand the effects of the pollen source on fruit size and quality; and 2) to explore the mechanisms underlying fruit development affected by the pollen source. We first characterized the pollination effect on fruit development using 14 different pollination combinations for several years and found that the number of mature seeds and fruit size differed significantly among the fruit pollinated by different pollen sources. Significant correlations between the number of mature seeds and fruit size were found in most combinations, whereas the number of mature seeds was not correlated with other fruit quality parameters such as sugar concentration. Our results and those of previous reports showed that the number of mature seeds, which was influenced by the pollen source, was a primary determinant of fruit size. Time-course observation during fruit development revealed that fruit weight and cell size significantly differed between self-pollinated and cross-pollinated fruit from 30 days after pollination onwards. To explore the molecular mechanisms underlying berry growth affected by developing seeds, we compared gene expression changes between self-pollinated and cross-pollinated fruit. Transcriptome analysis of fruit at 10 days after pollination suggested that auxin signaling pathways were enhanced in cross-pollinated fruit compared with self-pollinated fruit. We thus hypothesize that activated auxin signal transduction underlying early stage seed and fruit development may promote fruit cell enlargement during the early stage of fruit growth in highbush blueberry.

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Seed weight mediates effects of pollen on berry weight, ripening, and anthocyanin content in highbush blueberry

Doi

Inoue

Iwasaki

2021

Scientia Horticulturae

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Effects of the Number of Seeds per Berry on Fruit Growth Characteristics, Especially on the Duration of Stage II in Blueberry

Cited by 5 publications

References 16 publications

Effects of Caprifig (Ficus carica var. caprificus) Storage Temperature and Duration on the Fruit Productivity and Quality of ‘Bursa Siyahi’ Figs

Effects of Caprifig (Ficus carica var. caprificus) Storage Temperature and Duration on the Fruit Productivity and Quality of ‘Bursa Siyahi’ Figs

Insights into the Physiological and Molecular Mechanisms Underlying Highbush Blueberry Fruit Growth Affected by the Pollen Source

Seed weight mediates effects of pollen on berry weight, ripening, and anthocyanin content in highbush blueberry

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