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R.L. Bell and Jules Janick

Narrow-sense heritability estimates were computed for five fruit quality characteristics and their weighted total index. Grit content and skin russeting were moderately heritable traits, while flesh texture, flavor, appearance, and the weighted total score were of relatively low heritability. Within sub-populations of crosses, defined by the species ancestry of the parents, the relative magnitudes of heritabilities for each trait varied, but were in general agreement with those for the entire population. The general combining ability variances were 4.5 to 12.0 times those for specific combining ability, although both were statistically significant for all traits and the weighted quality index. The species ancestry of a parent had no effect on its general combining ability rank. While selection of individual seedlings on the basis of their own phenotype will result in genetic improvement for grit and russet, selection based on a combination of full-sib family means and individual phenotypes is recommended for flavor, texture, appearance, and overall fruit quality.

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Gerry H. Neilsen, Denise Neilsen, Frank Kappel, and T. Forge

fruiting to various nutrient and water management strategies. The study was conducted in a cold climate and variable spring temperatures among years allowed evaluation of climate effects on growth, productivity, and fruit quality. Materials and Methods A

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Hanan M. El-Hoseiny, Mohamed N. Helaly, Nabil I. Elsheery, and Shamel M. Alam-Eldein

improved annual productivity and fruit quality of ‘Ewais’ mango trees ( Elsheery et al., 2020 ). Humic acid (HA) is the active constituent of organic humus. It is not considered a fertilizer; instead, it is used as a soil conditioner or as a plant

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Masahiko Fumuro and Naoki Sakurai

relationship between fruit quality and ripening remains scarce. Therefore, developing storage techniques for improving the storage life of mango fruits is necessary. One of the most commonly used quality parameters for evaluating shelf life and storability in

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Abdullah Ibrahim, Hesham Abdel-Razzak, Mahmoud Wahb-Allah, Mekhled Alenazi, Abdullah Alsadon, and Yaser Hassan Dewir

( Pérez-Jiménez et al., 2015 ) have been recently introduced to improve the quality of vegetable products. Foliar fertilization is a common crop-management strategy to maximize yield and fruit quality ( Haytova, 2013 ) and help plants compensate for low

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Masahiko Fumuro

). The underground part also has strong vigor, and enlargement of the underground part proceeds rapidly, such that the pots clog. Tree vigor declines when the roots become clogged, which decreases yield and fruit quality and can lead to death. Because own

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Kathleen M. Griffiths, Mohammad H. Behboudian, and Melanie Dingle

Asian pear (Pyrus serotina Rehder) is endemic to southern China, Korea and Japan where it is an important fruit. Recent introduction into New Zealand has necessitated research to achieve high fruit quality. In this experiment three irrigation treatments were imposed on the cultivar Nijisseiki and the effect on fruit quality and storage life assessed. They were: a control for which soil water was maintained at 85% of field capacity (FC), “field” receiving only rainfall, and regulated deficit irrigation (RDI) in which soil water was depleted to 50% FC until rapid fruit growth started and then treated as in the control. Fruit weight and firmness were higher in the control and soluble solids were higher in the field treatment whose fruit matured earlier. Irrigation treatment showed no effect on the ripening pattern of the fruit in coolstorage or the incidence of the postharvest disorder flesh spot decay. Nitrogen and potassium levels were highest in the control fruit. However, levels of Mg, Ca, and P were not affected by irrigation.

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Hiroo Mukai, Toshihiko Takagi, Yasuhiro Nakamura, and Tetsuo Suzuki

Fruit quality of strawberry guava, yellow strawberry guava (Psidium cattleianum Sabine) and red strawberry guava (Psidium cattleianum Sabine var. luidium) was investigated. Fruit weight of yellow strawberry guava ranged from 7.9 to 39.2 g, and that of red strawberry guava ranged from 3.6 to 15.9 g. Yellow strawberry guava was round, and red strawberry guava was ovoid, in fruit shape. strawberry guava fruit had many hard seeds. Yellow and red strawberry guava contained 16 to 137 and 5 to 33 seeds per fruit. Seed of red strawberry guava was bigger than that of yellow strawberry guava. Sucrose, glucose, and fructose were contained in strawberry guava fruit. Sucrose, glucose, and fructose contents of yellow strawberry guava fruit were 6.69%, 3.61%, and 6.27%, respectively. Those of red strawberry guava fruit were 9.52%, 2.09%, and 3.39%, respectively. Strawberry guava fruit contained about 1% of titratable acidity. Total ascorbic and dehydro-ascorbic acid contents of yellow strawberry guava fruit were 57.9 mg/100ml and 41.6 mg/100ml, respectively. Those of red strawberry guava were 81.4 mg/100ml and 74.4 mg/100ml, respectively. Fruit quality of strawberry guava was suitable to eat freshly.

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Mekjell Meland and Clive Kaiser

fruitlet thinning for encouraging consistent annual bearing ( Meland and Gjerde, 1993 ). Blossom thinning improves fruit size and fruit quality at the same cropping level ( Meland, 2011 ). In Norway, ethephon is the only chemical registered for blossom

Open access

Fengyun Zhao, Yu Jiang, Xiufeng He, Huaifeng Liu, and Kun Yu

, premature aging of fruit trees, and poor fruit quality have become increasingly prominent ( Luo et al., 2018 ; Tao et al., 2014 ). There is an urgent need to further optimize the existing integrated drip irrigation with a water and fertilizer model to