Changes in Endogenous Plant Hormones in Cherry Tomato Fruits during Development and Maturation

Abdel-Rahman, M.; Thomas, T. H.; Doss, George J.; Howell, Lydia

doi:10.1111/j.1399-3054.1975.tb01852.x

Cited by 65 publications

(31 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…IAA [4] and cytokinin i .e . isopentenyl adenine, isopentenyl adenosine, zeatin and zeatin riboside [2,28] . Apparently, there is less cell division as well as less cytokinin and diffusible auxin in GA-induced fruits than in seeded fruits [5], but cell division in the GA-fruits can be stimulated if 4-CPA is applied within 3 days of the GA induction [8] .…”

Section: Fruit Set and Fruit Growth Potentialmentioning

confidence: 99%

Partitioning of assimilates in fruiting tomato plants

Ho¹

1984

Plant Growth Regul

View full text Add to dashboard Cite

Tomato is a potentially high-yield crop with a harvest index of about 65% . During fruiting, fruit growth accounts for 80 to 90% of the plant fresh weight gain and fruits are therefore the strongest sinks for assimilate .At initiation, an inflorescence is a weak sink in comparison with apical shoots . When assimilate supply is inadequate, the inflorescence has a reduced level of endogenous cytokinin and the degree of abortion is inversely related to the activity of sucrose hydrolase . Application of cytokinin plus gibberellins to the inflorescence increases its capacity to attract assimilate at the expense of apical shoots .At fruit set, cell division is activated and the ovary starts to accumulate reducing sugars and starch . Both the final cell number and the potential cell size are determined in the first two weeks and may be related to the levels of cytokinin and auxin .At the early stage of rapid growth a fruit accumulates imported assimilates, mainly in the forms of hexoses and starch . The rate of starch accumulation increases with the absolute fruit growth rate and affects the final soluble solids content of a fruit . The change in the fruit growth rate during fruit development does not coincide with the changes in the endogenous hormone levels of the fruit . A fruit competes for assimilate with others mainly in the same truss.

show abstract

Section: Fruit Set and Fruit Growth Potentialmentioning

confidence: 99%

Partitioning of assimilates in fruiting tomato plants

Ho¹

1984

Plant Growth Regul

View full text Add to dashboard Cite

show abstract

“…b. To determine the following organic substances, ethanolic extraction of pods was prepared as described by Abdel-Rahman et al (1975). Free phenolics concentration was determined by a modified FolinCiocalteu method at 650 nm according to William et al (1965).…”

Section: Determination Of Organic Compoundsmentioning

confidence: 99%

Biochemical and Anatomical Characters of Snap Bean (Phaseolus vulgaris L.) Pods under Furrow and Drip Irrigation System at Harvest and during Postharvest

El-tahan¹,

El-hamahmy²,

Elewa³

et al. 2016

SCUJ

View full text Add to dashboard Cite

The biochemical and anatomical analysis of furrow and drip-irrigated pods at harvest and after postharvest were investigated. Results showed that, furrow-irrigated pods were significantly higher in the concentration of vitamin C, free phenolics, protein and proline as well as superoxide dismutase activity than drip-irrigated ones. On the other hand, concentration of free amino acids and activity of catalase were higher in drip-irrigated pods by about 4 and 1.7 times than furrow-irrigated ones, respectively. Both types of pods were similar in chlorophylls, carotenoids, TA (%), TSS and reducing sugars concentrations. The two pod types were similar in the anatomical parameters studied except that furrow-irrigated pods which showed an increase in the thickness of parenchymatous cells in the pericarp. During storage, furrow-irrigated pods stored at 7±1°C and 85% RH for 25d showed lower % of decay, rot, soggy and shriveling, but showed more water loss than drip-irrigated ones at all storage periods. Drip-irrigated pods maintained high concentration of chlorophylls and carotenoid than furrow-irrigated pods until 20 d of storage. Furrow-irrigated pods preserve the vitamin C at high concentration at all storage periods. TA (%) and TSS were increased with storage in both fruit types without any significant differences between them. Both pod types had the same trend in the concentration of organic compounds and the activity of antioxidative enzymes. Furrow-irrigated pods maintained their pericarp and symmetric of cells compared to drip-irrigated ones. It could conclude that furrow irrigation was better to produce visual appearance, high nutritional snap beans with high quality. It can be stored without deleterious effect for 25 d at 7±1°C and 85% RH than drip irrigation.

show abstract

“…The bioassay systems, other than tissue culture, are relatively rapid methods but poor in specificity compared to tissue culture. Recently a convenient bioassay with Amaranthus seedli ngs6) has been used to survey the changes in the endogenous cytokinin levels in cherry tomato fruits 7 ) and to clarify cytokinins in cones of hop plant. S ) During the course of searching for cell division regulators from persimmon fruits, we isolated methyl pheophorbides a and b as callus growth inhibitors.9) In the present investigations, we found that the methanol extract of the fruits of Diospyrous kaki inhibited remarkably the cytokinin-induced betacyanin synthesis in the seedlings of Amaranthus caudalus.…”

mentioning

confidence: 99%

“…Elephantopin and vernolepin, which contain a-methylene-r-Iactone function in the molecule, were reported to inhibit not only growth of cells derived from human carcinoma of the nasopharynx (KB)l5) but also extension growth of wheat coleoptile sections. 16 ) Cysteine adducts of these cytotoxic lactones showed lower inhibitory activities against KB cell cultures/ 7 ) indicating that the cytotoxicity of a-methylener-lactones may result from alkylation of nucleophilic centers in a biological system. Sakai et al 18 ) reported that the biological activities (promotion of adventitious root formation, inhibition of Avena straight growth and antifungal activity) of phyllosinol (epoxydon, 5) were partly reduced on the addition of cysteine.…”

mentioning

confidence: 99%