Environmental, Chemical, and Genetic Control of Flowering

Kinet, Jean‐Marie

doi:10.1002/9780470650547.ch7

Cited by 33 publications

(16 citation statements)

References 189 publications

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“…Flower induction in mango is the temporary commitment of buds to evoke a particular development pathway which can be a vegetative shoot, generative shoot or mixed shoot when growth is initiated. Initiation of plant flowering refers to the onset of floral bud growth in actively growing vegetative shoots after the floral inductive event (Huala & Sussex, 1993;Kinet, 1993).…”

Section: Discussionmentioning

confidence: 99%

Off-Season Flower Induction in Mango Fruits Using Ethephon and Potassium Nitrate

Maloba¹,

Ambuko²,

Hutchinson³

et al. 2017

JAS

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Seasonality in mango production is a major factor contributing to high postharvest losses reported in the value chain. Oversupply during the high season is one of the factors that contribute to the high postharvest losses (≥ 50%) in the supply chain in Kenya. Effective strategies to address seasonality can contribute significantly to postharvest loss reduction. Efficacy of two flower induction chemicals, potassium nitrate (KNO 3 ) and ethephon on reproductive growth parameters and yield components were evaluated on two mango varieties: 'Apple' and 'Ngowe'. KNO 3 was applied at two concentrations (2 and 4%), and ethephon (600 and 1000 ppm) then compared to control (water). They were applied to trees which failed to flower/set fruit in 2014 season. There effect was established from reproductive growth parameters: days to flowering, number of panicles per tree, fruit set per 20 panicles, fruit fall and hormonal effect. KNO 3 (4%) and ethephon increased percentage flowering in both 'Ngowe' and 'Apple' and AEZs (Agro-Ecological Zones), significantly (p < 0.05) shortened time to flowering and increased fruit set. The findings show that KNO 3 and ethephon can be used to induce flowering/fruiting in mango fruits. These technologies can therefore be applied to induce off-season mango production to address seasonality and reduce postharvest losses during the peak season.

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Section: Discussionmentioning

confidence: 99%

Off-Season Flower Induction in Mango Fruits Using Ethephon and Potassium Nitrate

Maloba¹,

Ambuko²,

Hutchinson³

et al. 2017

JAS

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“…The autonomous flowerers have either long or short life cycles so they are not fussy about environment. They flower spontaneously when mature and may need only cues from environment (Kinet 1993;Davenport 2007;Wilkie et al 2008). Dracaena draco flowers after long period of time (at least 9 years) so it is an autonomous flowerer.…”

Section: Sunlight Makes D Draco Flowermentioning

confidence: 99%

Photomorphogenesis in Dracaena draco

Krawczyszyn¹,

Krawczyszyn²

2015

Trees

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Key message Sunlight is a key environmental factor in growth, flowering and shaping of the Dracaena draco tree. Unidirectional light deforms the tree and may cause it to tilt. Abstract Dracaena draco, a tree-like monocot, lives in cycles of vegetative growth and flowering. The cycles, as well as the tree growth form, are under genetic control. What controls their length has been unknown before. We propose that it is sunlight. Our trees of the same origin, growing for 20 years in the garden in varying sunlight conditions, started to flower when 9-12, 16 and 18-19 years old, for those growing in full sun, part shade and shade, respectively. In full sun, they grow shorter trunks than those in shade, catching overhead sun. Their branches also had shorter or longer growth and flowering cycles depending on sunlight availability. D. draco tree exhibited strong phototropic response and its crown was organized by the direction of growing tips. In full and in overhead sun, it had a regular form but asymmetrical in unidirectional, oblique sunlight. An asymmetrical crown and the absence of reaction wood may cause the D. draco tree tilting and progressive loss of balance.

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“…Flowers in some species can track the sun 24 hours a day (Kevan, 1975) while others can open/close every day (He et al, 2005) so as to lessen the fluctuating magnitude of flower interior temperature. Such flower behaviors are often thought to be plant responses to the changes in light intensity (Karvé et al, 1961;Saito and Yamaki, 1967;Takimoto, 1980, 1981;Ichimura and Suto, 1998;Cashmore et al, 1999;van Doorn and van Meeteren, 2003), ambient temperature (Cockshull et al, 1981;Tanaka et al, 1987;Kinet, 1993;Ichimura and Suto, 1998;McKee and Richards, 1998b), and humidity Obaton, 1922a, 1922b;Halket, 1931;van Doorn and van Meeteren, 2003). Because flower interior temperature is affected by both petal color and flower movements, it is expected that there should be a connection among the physical factors (flower color and movement).…”

Section: Introductionmentioning

confidence: 99%

Petal Color, Flower Temperature, and Behavior in an Alpine Annual Herb, Gentiana leucomelaena (Gentianaceae)

Sun

2010

Arctic, Antarctic, and Alpine Research

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Environmental, Chemical, and Genetic Control of Flowering

Cited by 33 publications

References 189 publications

Off-Season Flower Induction in Mango Fruits Using Ethephon and Potassium Nitrate

Off-Season Flower Induction in Mango Fruits Using Ethephon and Potassium Nitrate

Photomorphogenesis in Dracaena draco

Petal Color, Flower Temperature, and Behavior in an Alpine Annual Herb, Gentiana leucomelaena (Gentianaceae)

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