Epicormic shoot growth in striped maple

1979 ◽  
Vol 9 (1) ◽  
pp. 110-113 ◽  
Author(s):  
B. F. Wilson
Keyword(s):  
Gibberellic Acid ◽  
Growth Regulators ◽  
Shoot Growth ◽  
Subsequent Growth ◽  
Benzyl Adenine ◽  
Indolebutyric Acid ◽  
Lateral Buds ◽  
Terminal Bud ◽  
Epicormic Shoot ◽  
Stem Segments

Epicormic shoots on stem segments from suppressed striped maple (Acerpensylvanicum L.) grow from poorly developed lateral buds in the axils of bud scales. The nondormant buds on stem segments in water are released by removing the terminal bud. For dormant buds (collected in winter) to grow they must, in addition to removing the terminal, either be chilled at 5 °C for 3–4 months or be treated with gibberellic acid (GA). Treatment with basally applied growth regulators did not release lateral buds if the terminal was intact. Nondormant buds on decapitated segments were totally inhibited by indolebutyric acid, applied either basally in solution or apically in lanolin, and partially inhibited by abscissic acid or 2-chloroethylphosphonic acid. Triiodobenzoic acid increased the number of buds released on decapitated segments but inhibited their subsequent growth. GA and benzyl adenine did not effect bud release but did stimulate subsequent epicormic shoot growth.

Shoot growth from the bud bank in black oak

1994 ◽  
Vol 24 (1) ◽  
pp. 149-154 ◽  
Author(s):  
Brayton F. Wilson ◽  
Matthew J. Kelty
Keyword(s):  
Leaf Area ◽  
Shoot Growth ◽  
Shoot Length ◽  
Leaf Number ◽  
Bud Bank ◽  
Shoot Production ◽  
Shoot Number ◽  
Terminal Bud ◽  
Black Oak ◽  
Stem Segments

The bud bank in black oak (Quercusvelutina Lam.) trees is composed of four bud types, with the first three occurring on current shoots: (i) large buds in terminal clusters; (ii) large intercluster buds; (iii) small leafless buds; and (iv) preventitious buds on older shoots. Leafless buds may grow and preventitious buds may form epicormic shoots after injuries to large buds. We applied clipping treatments to small trees growing in either shade or light to test for crown recovery of leaf number, leaf area, leaf weight, shoot number, and total shoot length. Removing the terminal bud cluster almost doubled the proportion of intercluster buds that produced shoots and did not affect crown parameters, compared with control trees. Removing all large buds increased epicormic shoot production, but did not affect crown parameters. Removing current shoots reduced only leaf area and leaf number in the shade. The more extreme clipping treatments released primarily 2-year-old preventitious buds, but only a few older buds. Buds of all ages could be forced on isolated stem segments. Mortality of buds from the 1st to 2nd year was more than 90% for buds with leaves and about 50% for leafless buds.

Effects of growth regulators and controlled atmosphere on stored carrots

1974 ◽  
Vol 82 (2) ◽  
pp. 245-249 ◽  
Author(s):  
M. Abdel-Rahman ◽  
F. M. R. Isenberg
Keyword(s):  
Gibberellic Acid ◽  
Growth Regulators ◽  
Dichlorophenoxyacetic Acid ◽  
Trimethylammonium Chloride ◽  
Controlled Atmosphere ◽  
Benzyl Adenine ◽  
Large Size ◽  
2,4 Dichlorophenoxyacetic Acid ◽  
Better Than

SummaryPreharvest sprays with 6-hydroxy-3-(2H)-pyridazinone (MH), or immersion in solutions of MH, 2,4-dichlorophenoxyacetic acid (2,4-D), 2-chloroethylphosphonic acid (ethephon), coumarin or (2-chloroethyl) trimethylammonium chloride (CCC) inhibited both sprouting and rooting of treated carrots during storage at 0 °C whencompared with water-dipped or untreated carrots, while N-6-benzyl-adenine (BA) dips stimulated extensive rooting and sprouting. In contrast, immersion in gibberellic acid (GA3) solutions had very little effect.Storage atmospheres containing 1, 2.5, 5 or 10% oxygen inhibited both sprouting and rooting but increased mould infection. Atmospheres containing 21% (air) or 40% oxygen reduced mould infection, but increased sprouting and rooting of stored carrots. Washing carrots in water before storage did not significantly affect mould infection, while washing in 0.5% clorox increased it. However, washing in water followed by immersion in MH inhibited both sprouting and rooting and also reduced mould infection. ‘Jumbo’ and large-size carrots stored better than medium and small carrots.

scholarly journals Grape yield and quality of the grapevine cultivar limberger treated with plant growth regulators

2004 ◽  
Vol 49 (2) ◽  
pp. 141-147
Author(s):  
Slavica Todic
Keyword(s):  
Plant Growth ◽  
Gibberellic Acid ◽  
Growth Regulators ◽  
Shoot Growth ◽  
Foliar Application ◽  
Sugar Content ◽  
Grapevine Cultivar ◽  
Yield And Quality ◽  
Grape Yield

The effects of foliar application of paclobutrasol (PK), chlorcholinechloride (CC) and gibberellic acid (GA3) on grape yield and quality of the grapevine cultivar Limberger were studied. PK and CC strongly inhibited shoot growth. The number of berries per bunch, bunch weight and grape yield per m2 were increased. At the same time, sugar content of must was either reduced (CC2000) or retained at the level of control (PK1000, CC1000). The GA150 treatment resulted in lower grape yield. At the concentration of GA3 100mg/l no significant increase in yield was found, whilst sugar content of must was significantly increased.

scholarly journals Micrografting Compatibility Between Two Almond Cultivars and Four Wild Species

2021 ◽  
Vol 22 (1) ◽  
pp. 1-6
Author(s):  
Wafaa Koaym ◽  
Mohamed Battha ◽  
Mhasen Twaklna
Keyword(s):  
Gibberellic Acid ◽  
Growth Regulators ◽  
Shoot Multiplication ◽  
Prunus Dulcis ◽  
Shoot Length ◽  
Ms Medium ◽  
Success Rates ◽  
Benzyl Adenine ◽  
High Quality ◽  
Wild Almond

Micropropagation and micrografting techniques are important methods used to obtain high quality plants. This research aimed to investigate the effect of wild almond species (Prunus communis, P. orientalis, P. korschinskii, and P. arabica) on the success of micrografting almond cultivars (Prunus dulcis cvs. Shami Furk and Dafadii)and determine which combination of growth regulators lead to the highest rate of multiplication in micrografted cultivars. The shoot tips were grafted onto the rooted rootstocks by inverted T-budding. The results indicated that Murashige and Skoog (MS) medium, supplemented with 1 mg/l benzyl adenine (BA), 0.1 mg/l indole-3-butyric acid (IBA) and 0.2mg/l gibberellic acid (GA3), achieved the highest shoot multiplication with an average of 5.31 and 3.67 shoots per explant and an average of 6.23cm and 4.98cm shoot length in cultivars Shami Furk and Dafadii, respectively. The highest grafting success rates were 80% and 74.26% obtained from Shami Furk/P. arabica and Dafadii/P. arabica combinations, respectively, while the lowest success rate was 50.63% with the Dafadii/P. orientalis combination. The liquid MS medium supplemented with 0.5 mg/l BA + 0.1 mg/l IBA achieved the highest micrografting success and scion shoot length. This research can be used to improve almond cultivation.

scholarly journals Action of growth regulators on flowering and pod production of soybean cultivar Davis

1981 ◽  
Vol 38 (1) ◽  
pp. 99-112
Author(s):  
Paulo R.C. Castro ◽  
Roberto S. Moraes
Keyword(s):  
Glycine Max ◽  
Gibberellic Acid ◽  
Growth Regulators ◽  
Lower Number ◽  
Soybean Cultivar ◽  
Soybean Plant ◽  
Trimethylammonium Chloride ◽  
Triiodobenzoic Acid ◽  
Soybean Plants

This research deals with the effects of growth regulators on flowering and pod formation in soybean plant (Glycine max cv. Davis). Under greenhouse conditions, soybean plants were sprayed with 2,3,5-triiodobenzoic acid (TIBA) 20 ppm, Agrostemmin (1g/10 ml/3 l) gibberellic acid (GA) 100 ppm, and (2-chloroethyl) trimethylammonium chloride (CCC) 2,000 ppm. Application of TIBA increased number of flowers. 'Davis' soybean treated with CCC and TIBA presented a tendency to produce a lower number of pods.

scholarly journals CHANGES IN THE CHARACTERISTICS OF ‘PRATA’ BANANA TREATED WITH CYTOKININ AND GIBBERELLIN

2016 ◽  
Vol 38 (3) ◽  
Author(s):  
JULIANA DOMINGUES LIMA ◽  
JÉSSICA SANTA ROSA ◽  
DANILO EDUARDO ROZANE ◽  
EDUARDO NARDINI GOMES ◽  
SILVIA HELENA MODENESE GORLA DA SILVA
Keyword(s):  
Plant Growth ◽  
Gibberellic Acid ◽  
Factorial Design ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Physicochemical Characteristics ◽  
Fruit Yield ◽  
Musa Spp ◽  
Yield And Quality ◽  
Split Plot

ABSTRACT Plant growth regulators can influence fruit yield and quality. This study aimed to evaluate the effect of cytokinin and gibberelin on the agronomic and physicochemical characteristics of banana fruits cv. ‘Prata’ (Musa spp. AAB), according to the formation period and position in the bunch. The experiment was conducted in a completely randomized 2 x 5 factorial design, two periods of bunch development (summer and winter), five treatments and ten replicates. To study the effect of position in the bunch, split plot was adopted, considering in the plot, 2 x 5 factorial and in subplots, hand 1, hand 4 and last hand. Treatments consisted of 2 pulverizations with water, 150 mg L-1 cytokinin, 200 mg L-1 of gibberellic acid, 100 mg L-1 of cytokinin plus 200 mg L-1 of gibberellic acid and 200 mg L-1 of cytokinin plus 200 mg L-1 of gibberellic acid, applied from the fourth to the last hand of the bunch. Cytokinin and gibberellin, alone or associated, regardless of formation period and position, did not affect the size and physicochemical characteristics of fruits, only delayed the bunch harvest.

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