Results: 28

Range of factors in the reduction of hyperhydricity associated with in vitro shoots of Salvia santolinifolia Bioss

Braz. j. biol; 83 (), 2023
Abstract Hyperhydricity is a serious physiological disorder and affects In vitro propagation of many plants and as well of Salvia santolinifolia. The donor material to initiate the in vitro culture was the callus taken from the in vitro shoots produced on Murashig and Skoogs (MS) medium at 4.0 mg/l BA. T...

Growth regulators and their reflection on different hop genotypes cultivated under in vitro conditions

Braz. j. biol; 82 (), 2022
Hops is a new culture in Brazil. Tissue culture can be an important technique for rapid hop propagation. This paper aims to characterize responses from different genotypes under different growth regulators through the interrelationship of response variables important to hop in vitro growth. Three genotyp...

Effective temperature for overcoming dormancy of 'Fuyu' persimmon tree buds

The objective of this study was to evaluate the effective temperature for overcoming the dormancy of ‘Fuyu’ persimmon tree buds. Stem samples were collected three times between 2013 and 2014. Stems were maintained in a climate incubator chamber at 3, 6, 9, and 12 °C. For each temperature, five numbe...

Agronomic characterization of sunflower cultivars for animal feeding in tropical conditions

Biosci. j. (Online); 37 (), 2021
This study was developed to examine morpho-agronomic traits of 18 sunflower cultivars and identify superior cultivars in terms of grain yield, forage quality, or both, for animal feeding. Twenty-two morpho-agronomic traits related to plant development and architecture; earliness of maturity; grain yield ...

Chemical management of Cyperus rotundus L. and other weeds at sugarcane in PSS system

Biosci. j. (Online); 37 (), 2021
Among the main weeds with difficult to control in the sugarcane fields can be cited purple nutsedge (Cyperus rotundus L.). This specie was observed in the seed bank in sugarcane fields harvested with or without burning. The objective of this study was to evaluate the efficacy of herbicides in pre-sproute...

Enzymatic activity and gene expression related to drought stress tolerance in maize seeds and seedlings

Biosci. j. (Online); 37 (), 2021
Drought stress is a major limiting factor for the development of maize, and the identification of the expression of genes related to this stress in seeds and seedlings can be an important tool to accelerate the selection process. The expression of genes related to tolerance to water deficit in seeds and ...

Macronutrient uptake, transport and use efficiency in seedlings of Pochota fendleri produced in different substrates

Biosci. j. (Online); 36 (Supplement1), 2020
Seedlings produced in containers can be influenced by the materials used in the substrate, which affects the robustness of the plants and, indirectly, the time required for transplanting and for the plants to become established in the field. The aim of this study was to determine the chemical properties ...

Refrigerated storage period of Rhizophores for Yacon propagation

Biosci. j. (Online); 36 (Supplement1), 2020
The yacon plant produces tuberous roots, used mostly for fresh consumption. This crop is propagated primarily via vegetative structures, called rhizophores. However, since these propagules have short periods of viability after harvest, storing them in cold chamber conditions may be a viable alternative t...

Improving micropropagation of some grape cultivars via boron, calcium and phosphate

BACKGROUND: An efficient regeneration protocol is a priority for the successful application of plant biotechnology. Grape nodal explants were used to develop a micropropagation protocol for Thompson Seedless and Taify cvs. Explants were cultured on MS medium supplemented with Kinetin or benzylaminopurine...

Principales reguladores hormonales y sus interacciones en el crecimiento vegetal

NOVA publ. cient; 17 (32), 2019
Resumen Una hormona vegetal o fitohormona es un compuesto producido internamente por una planta, que ejerce su función en muy bajas concentraciones y cuyo principal efecto se produce a nivel celular, cambiando los patrones de crecimiento de los vegetales y permitiendo su control. Los reguladores vegetal...