Effects of foliar applied benzyladenine on grain yield and grain protein in wheat (Triticum aestivum L.)

Caldiz, Daniel O.; Beltrano, José; Fernández, Laura; Sarandón, Santiago Javier; Favoretti, Carlos

doi:10.1007/bf00024410

Cited by 14 publications

(5 citation statements)

References 10 publications

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“…The application of this derivative at the stage of cotyledons could act in different ways upon the meristematic tissues and mature cells of treated Fagopyrum plants. This fact corroborates the opinion that biologically active substances in many cases affect the quantitative growth and yield-related parameters in the plants and also alter their natural hormonal status (Caldiz et al 1991, Beckett and Van Staden 1992, Chernyad'ev 1994. Buckwheat plants proved a suitable model for indicating growth activity of tested compounds, because it was consistently a more sensitive seedling than bean seedlings.…”

Section: Discussionsupporting

confidence: 81%

Benzothiazole derivatives substituted in position 2 as biologically active substances with plant growth regulation activity

Šimonová¹,

Henselová²,

Zahradnı́k³

2005

PLANT SOIL ENVIRON

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Thirteen of the new synthetized 2-R substituted benzothiazole derivatives have been tested for plant growth regulatory (PGR) activity. The effect on growth elongation was studied on wheat coleoptile segments Triticum aestivum L. cv. Blava, and on the hypocotyl and roots in cucumber Cucumis sativum L. cv. Evita. The formation and number of adventitious roots and the length of hypocotyl in Vigna radiata (L.) Wilczek and, the effect on the length of stem, fresh and dry mass in buckwheat Fagopyrum esculentum Moench. cv. Pyra were evaluated. Cytokinin activity was determined on segments of barley leaves Hordeum vulgare L. cv. Jubilant on the basis of senescence inhibition and chlorophyll content. The benzothiazole derivatives were tested in the range of 10<sup>–3</sup>–10<sup>–7</sup>M concentrations, and PGR activity was compared with indole-3-acetic acid, indole-3-butyric acid and 6-furfurylaminopurine. All tested derivatives showed different auxine-like effects on elongation growth of plants and the stimulative effects were found to depend on applicable concentrations. At higher concentration rates, derivatives acted as growth retardants and inhibited the length of cucumber hypocotyl and roots. The derivatives increased the formation of adventitious roots of mung bean hypocotyl cuttings, as well as stem elongation and production of fresh and dry mass of buckwheat. Cytokinin activity was confirmed in one derivate only with a significant effect on the inhibition of leaf senescence and higher chlorophyll content. The tested benzothiazole derivatives may be characterized as biologically active substances with dominant auxine-like growth promoting activity

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Section: Discussionsupporting

confidence: 81%

Benzothiazole derivatives substituted in position 2 as biologically active substances with plant growth regulation activity

Šimonová¹,

Henselová²,

Zahradnı́k³

2005

PLANT SOIL ENVIRON

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“…These results are in accordance with those of Wheeler [18], Newman and Nooden [11], Srivastava [16] and Caldiz et al . [3], which demonstrated that BA can delayed leaf senescence, improving current photosynthesis and as is evidenced from the present results, photoassimilate distribution . This also confirmed that photoassimilate distribution is under hormonal control, as proposed by Ackerson [I] .…”

Section: Resultsmentioning

confidence: 55%

Effects of foliar applied gibberellic acid and benzyladenine upon yield components in sunflower (Helianthus annuus L.)

et al. 1994

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Sunflower yield is determined by seed number/m -2 and by achene weight. Frequently, a high percentage of empty achenes in the inner portion of the capitulum, probably due to a reduced vascularization of that section of the flower head, decreases final yield . The objective of the present research is to determine if foliarly applied gibberellic acid (GA) and benzyladenine (BA) can enhance the vascularization in the inner portion of the capitulum, improving photoassimilate translocation . Field experiments were conducted during 1989/90 with hybrid SPS 894 and during 1990/91 with hybrid ACA 882 . GA (150 mg/1 -1 ), BA (150 and 250 mg/1 -1 ) and GA 150 + BA 150 mg/1 -I each were foliarly applied 20, 40, or 60 days after emergence . For both seasons and hybrids plant growth regulator (PGRs) applications significantly reduced the percentage of empty achenes, increased achene weight, achene weight (x 1000) and achene number in the inner portion of the capitulum and in the middle and outer portion during 1990/91 . A 25% increase in seed yield was achieved due to PGR application and the capitulum partition index (achene weight/receptacle weight-1 , CPI) was significantly increased due to an improvement in photoassimilate distribution . A distribution model was derived showing that preferential allocation of photoassimilates in the outer portion of the capitulum can be modified by PGR application, demonstrating that photoassimilate distribution is under hormonal control . 101

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“…In an early study, Herzog & Geisler (1977) reported beneficial effects of cytokinin application, although subsequent studies showed negative or no effects, respectively (Herzog 1981, 1982). Caldiz et al (1991) found that exogenous BA application had no effect on wheat yield. Stem infusion of synthetic cytokinins reduced kernel abortion and enhanced thermal tolerance in maize (Cheikh & Jones 1994; Dietrich et al 1995).…”

Section: Introductionmentioning

confidence: 99%

Postanthesis temperatures influence cytokinin accumulation and wheat kernel weight

Banowetz

Ammar

Chen

1999

Plant Cell & Environment

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High temperatures during reproductive development alter kernel development and reduce yield and quality in wheat (Triticum aestivum L.). Understanding how temperature alters kernel formation will help the development of genetic approaches to enhance heat tolerance in this cereal. A relationship between kernel development and postanthesis cytokinin accumulation is well documented, but the effect of temperature on this relationship is not known. This study quantified the effects of a postanthesis temperature treatment (7 d at 35/25°C day/night) on kernel development and cytokinin accumulation in a soft white winter wheat (c.v. Stephens). Kernels from control plants maintained at 25/15°C accumulated zeatin, dihydrozeatin and their corresponding 9-ribosides from 1 to 4 d postanthesis. Postanthesis kernel cytokinin accumulation was reduced by 50-80% by the temperature treatment. Kernel cytokinin content in control plants declined to baseline by 5 d postanthesis and remained at that level. Kernels from treated plants had a secondary peak of cytokinin accumulation 6-8 d after anthesis. This treatment significantly reduced kernel weight. The magnitude of the effect on kernel number was smaller than on kernel weight, but was statistically significant. Reduced kernel weight was accompanied by reduced cytokinin accumulation. Exogenous cytokinins did not mitigate the temperature effects on kernel weight, but at the highest concentrations, did reduce the effect on kernel number.

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Effects of foliar applied benzyladenine on grain yield and grain protein in wheat (Triticum aestivum L.)

Cited by 14 publications

References 10 publications

Benzothiazole derivatives substituted in position 2 as biologically active substances with plant growth regulation activity

Benzothiazole derivatives substituted in position 2 as biologically active substances with plant growth regulation activity

Effects of foliar applied gibberellic acid and benzyladenine upon yield components in sunflower (Helianthus annuus L.)

Postanthesis temperatures influence cytokinin accumulation and wheat kernel weight

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