The pattern and control of reproductive development in lychee: A review
TL;DR: Potential techniques for improving the setting and retention of fruit include varietal selection, withholding of nitrogen fertilization during flowering and early fruit growth (to reduce vegetative flushing), and the maintenance of plant moisture status (irrigation, overhead misting and windbreaks).
About: This article is published in Scientia Horticulturae.The article was published on 1984-03-01. It has received 62 citations till now. The article focuses on the topics: Fruit abscission & Abscission.
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TL;DR: Four lychee cultivars were grown in subtropical coastal southern Queensland and Wai Chee was superior to Gee Kee under all conditions and to Bengal and Tai So when flowering was reduced after warm wet winters or when fruiting was reduced during hot, dry springs.
Abstract: Four lychee (Litchi chinensis) cultivars (Bengal, Gee Kee, Tai So and Wai Chee) were grown in subtropical coastal southern Queensland. Yields after 8 years varied from 0.1 to 28.5 kg/tree (equivalent to a maximum of 6.6 t/ha at a density of 230 trees/ha). Wai Chee was superior to Gee Kee under all conditions and to Bengal and Tai So when flowering was reduced after warm wet winters or when fruiting was reduced during hot, dry springs.
9 citations
Cites background from "The pattern and control of reproduc..."
...High temperatures, low humidities and strong winds have been implicated as the major reason for flower and fruit drop in lychee, since these factors lowered leaf water potential even when the soil was held close to field capacity (Menzel 1984; Menzel et al. 1986)....
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...Other factors such as poor pollination (Menzel 1984), nutrient deficiencies (Menzel et al....
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TL;DR: In this paper, the main cultivar in Israel's litchi industry, tends to suffer from massive fruitlet drop, and spraying with 2,4,5-TP at the ca. 2 g fruitlet stage was shown to improve the performance.
Abstract: ‘Mauritius’, the main cultivar in Israel’s litchi industry, tends to suffer from massive fruitlet drop. Recently, spraying ‘Mauritius’ trees with 2,4,5-TP at the ca. 2 g fruitlet stage was shown to...
9 citations
TL;DR: In this paper, a nordihydroguaiaretic acid (NDGA) treatment can decrease the incidence of grape berry cracking in the cracking-susceptible Vitis vinifera cultivar "Aishen Meigui".
8 citations
Book Chapter•
01 Jun 2019
7 citations
Cites background from "The pattern and control of reproduc..."
...The phenomenon of heavy fruit drop is typical to litchi (Menzel, 1984; Joubert, 1986; Galan-Sauco and Menini, 1989) and other fruit trees that produce a very large number of pistil-bearing flowers, such as mango (Singh, 1960) and avocado (Papademetriou, 1976)....
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TL;DR: Stem growth was cyclic, with distinct periods of rapid extension followed by periods with no extension, and root growth was fairly continuous with only three periods of no visible root extension.
Abstract: 'Mauritius' lychee (Litchichinensis Sonn.) trees were planted in root observation chambers in July 1990 to determine the pattern of root and stem extension growth during 12 months. Root and stem lengths were measured at intervals ranging from 7 to 18 days from Aug. 1990 until Aug. 1991. During each period of active canopy growth, up to six stem tips were tagged and measured. Root growth was determined by measuring tracings of the extension of each root in a visible plane of the glass wall of the observation chambers. Stem growth was cyclic, with distinct periods of rapid extension followed by periods with no extension. In contrast, root growth was fairly continuous with only three periods of no visible root extension. Mean absolute extension rates were higher for stems than for roots. There were no consistent relationships between the timing of root and stem extension growth.
6 citations
References
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TL;DR: The most suitable temperature regime for floral behaviour, pollen tube growth and embryo development was 25 20, and the ovules at 17 12 had an embryosac penetrated by a pollen tube.
81 citations
TL;DR: An alternative approach involves a critical study of manipulative techniques which restrict vegetative flushing and promote vegetative dormancy under non-inductive conditions, i.e. cincturing, applying growth retardants and withholding irrigation and fertilizers.
78 citations
TL;DR: The rate of pollen tube growth increased with a rise in temperature, but abnormal growth was frequently observed at 33/28 and tubes failed to reach the ovary at 17/12, and endosperm and embryo development was observed to occur at 25/20 but not at33/28 or 17/ 12 although a positive effect of...
Abstract: SummaryAvocado plants were kept in growth cabinets at 33°C day, 28°C night (33/28); 25°C day, 20°C night (25/20); and 17°C day, 12°C night (17/12), with a 12-h photoperiod and light intensity of 26000 1x. At 33/28 and 25/20 flowers opened in the afternoon as females and again the following morning as males (type B floral cycle) with some overlap of male and female stages at 25/20. At 17/12 very few flowers had a female stage, the majority opening once only as males. The duration of the flowering period decreased with a rise in temperature as did total number of flowers opening. Reproductive growth was inhibited in favour of vegetative growth at 33/28, as exhibited by smaller floral parts and abscission of buds and flowers. The rate of pollen tube growth increased with a rise in temperature, but abnormal growth was frequently observed at 33/28 and tubes failed to reach the ovary at 17/12. Endosperm and embryo development was observed to occur at 25/20 but not at 33/28 or 17/12 although a positive effect of...
70 citations
TL;DR: The growth curves of pericarp, seed and aril, and the fruit as a whole were typically sigmoidal and the developing embryo seemed to inhibit aril growth at a certain stage of development.
41 citations