scholarly journals Potential productivity realization of common winter wheat plants under drought

2020 ◽  
Vol 27 ◽  
pp. 77-82
Author(s):  
O. I. Zhuk
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Triticum Aestivum L ◽  
Soil Drought ◽  
Well Water ◽  
Grain Number ◽  
Potential Productivity ◽  
Reproductive Ability ◽  
Inhibition Of Growth ◽  
Critical Phase

Aim. The goal of this work was to study the effect of soil drought on the reproductive ability of common winter wheat plants (Triticum aestivum L.). Methods. Wheat plants of cultivars Kujalnik and Ladijinka were grown under optimal nutrition and well-water conditions to the earing-flowering phase, after that the experimental plants were transferred to drought regime for 8 days, after that the optimal water supply was restored to the end of vegetation. During the experiment, the stem and ear length were measured. Ripened plants were analyzed according to the structure of the yield. Results. It is established that the effect of drought in the critical phase of ontogenesis the earing-flowering led to the decreasing the stem and ear length, the mass of the ear and grains, number of grains on plant. Conclusions. Water deficit in the soil in the critical phase of earing-flowering led to a decrease in the productive of winter wheat plants due to the inhibition of growth of stem and ear, decreasing grain number and the mass of ear and grains. Keywords: Triticum aestivum L, stem, ear, productivity, drought.

scholarly journals Reproductive ability of common winter wheat plants under drought

2019 ◽  
Vol 24 ◽  
pp. 86-91 ◽  
Author(s):  
O. I. Zhuk
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Leaf Area ◽  
Triticum Aestivum L ◽  
Stem Length ◽  
Soil Drought ◽  
Grain Number ◽  
Reproductive Ability ◽  
Inhibition Of Growth ◽  
Critical Phase

Aim. The goal of this work was to study the effect of soil drought on the reproductive ability of common winter wheat plants (Triticum aestivum L.). Methods. Wheat plants of cultivars Yednist and Zbruch were grown under optimal nutrition and well-watered conditions to the earing-flowering phase, after that the experimental plants were transferred to drought regime for 10 days, after that the optimal water supply was restored to the end of vegetation. During the experiment, the stem length and the leaf area were measured. Ripened plants were analyzed according to the structure of the yield. Results. It is established that the effect of drought in the critical phase of ontogenesis the earing-flowering led to the decreasing the stem length, the leaf area, the mass of the ear and grains, number of grains more in Zbruch cultivar than in Yednist cultivar. In Zbruch cultivar under drought the number of productive stems per plant decreased. Conclusions. Water deficiency in the soil in the critical phase of earing-flowering led to a decrease in the reproductive ability of winter wheat plants due to the inhibition of growth of stem, reduction of the leaf area, the grain number and the mass of ear and grains. Keywords: Triticum aestivum L., stem, ear, productivity, drought.

scholarly journals Growth and productivity of wheat plants under drought in the critical phase of ontogenesis

2021 ◽  
Vol 29 ◽  
pp. 35-40
Author(s):  
O. I. Zhuk ◽  
O.O. Stasik
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Surface Area ◽  
Leaf Surface ◽  
Triticum Aestivum L ◽  
Grain Number ◽  
Plant Weight ◽  
Inhibition Of Growth ◽  
Critical Phase ◽  
Leaf Surface Area

Aim. The goal of this work was to study the effect of drought in the critical phase of ontogenesis on the growth and productivity of breed winter wheat plants (Triticum aestivum L.). Methods. Wheat plants of cultivars Darunok Podillya and Podolyanka were grown under optimal nutrition and well-water conditions until the earing-flowering phase, after that the experimental plants were transferred to drought regime for 8 days, after that the optimal water supply was restored to the end of vegetation. During the experiment, the leaf surface area, the mass of internodes and ear were determined. Ripened plants were analyzed according to the structure of the yield. Results. It was established that the effect of drought in the critical phase of ontogenesis the earing-flowering caused to the decreasing in leaf surface area, mass of internodes, ear, mass and number of grains in the ear and plant, weight of 1000 grains. Conclusions. Water deficit in the soil in the critical phase of earing-flowering led to a decrease in the productive of breed winter wheat plants due to the inhibition of growth of ear, decreasing grain number and the mass of ear and grains. Keywords: Triticum aestivum L., internode, ear, productivity, drought.

scholarly journals Productivity of winter wheat plants under drought

2018 ◽  
Vol 23 ◽  
pp. 63-67 ◽  
Author(s):  
O. I. Zhuk
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Water Supply ◽  
Plant Height ◽  
Triticum Aestivum L ◽  
Soil Drought ◽  
Inhibition Of Growth ◽  
Drought Conditions ◽  
Critical Phase ◽  
Yield Structure

Aim. The goal of research was to study the effects of soil drought on the productivity of winter wheat plants (Triticum aestivum L.). Methods. Wheat plants of the cultivars of Zolotocolosa and Astarta were grown under optimal nutrition and moisture to the earing-flowering phase. After the beginning of it the experimental plants were transferred to drought conditions for 8 days, after that the optimal water supply was restored to the end of the vegetation. The yield structure was analyzed in mature plants. Results. It is established that the effect of drought in the critical phase of ontogenesis led to a decrease in plant height, ear size, mass and number of grains in it. At the same time, the number of grains in ears of plants decreased more significantly in the cultivar Zolotocolosa compared to the Astarta, especially in the tillers. The loss of grains mass from the ear was lower in cultivar Zolotocolosa than to the Astarta. Conclusions. Water deficit in the soil in the critical phase of ear-flowering led to a decrease in the productivity of wheat plants due to the inhibition of growth, the laying and the formation elements of the ear and grains, that depended on the specificity of the cultivar. Keywords: Triticum aestivum L., stem, ear, productivity, drought.

Relationship of Pre-anthesis Fructan Metabolism to Grain Numbers in Winter Wheat (Triticum aestivum L.)

1986 ◽  
Vol 13 (3) ◽  
pp. 391 ◽  
Author(s):  
JE Hendrix ◽  
JC Linden ◽  
DH Smith ◽  
CW Ross ◽  
IK Park
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Triticum Aestivum L ◽  
Average Degree ◽  
Grain Number ◽  
Degree Of Polymerisation ◽  
Harvest Dates ◽  
Fructan Metabolism ◽  
Relationship Of

Four cultivars of winter wheat were analysed for non-structural carbohydrates at four harvest dates starting at inflorescence initiation and ending at anthesis. Grain number was determined from comparable plants harvested at maturity. Fructose, glucose, sucrose, and fructans were quantified in extracts of stems and inflorescences. In stems the content of the four carbohydrates increased until about a week before anthesis. During the week before anthesis the trend for the sugars was variable, but fructan content continued to increase. In inflorescences, trends for sugars were similar to those in stems; however, fructan content peaked 7-10 days before anthesis. Peak quantities of fructans in inflorescences and the quantities degraded after the peak were both correlated with grain numbers. The average degree of polymerisation of fructans from stems was 5 with most being in the range from 3 to 7. The degree of polymerisation in inflorescences ranged from 3 to 56. All of these data indicate that inflorescences differ from stems in their control of fructan metabolism.

scholarly journals Naturally Occurring Ecdysteroids in Triticum aestivum L. and Evaluation of Fenarimol as a Potential Inhibitor of Their Biosynthesis in Plants

2021 ◽  
Vol 22 (6) ◽  
pp. 2855
Author(s):  
Anna Janeczko ◽  
Jana Oklestkova ◽  
Danuše Tarkowská ◽  
Barbara Drygaś
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Triticum Aestivum L ◽  
Growth Conditions ◽  
Animal Kingdom ◽  
Experimental Conditions ◽  
P450 Monooxygenase ◽  
Naturally Occurring ◽  
Regulatory Effects ◽  
Potential Use

Ecdysteroids (ECs) are steroid hormones originally found in the animal kingdom where they function as insect molting hormones. Interestingly, a relatively high number of these substances can also be formed in plant cells. Moreover, ECs have certain regulatory effects on plant physiology, but their role in plants still requires further study. One of the main aims of the present study was to verify a hypothesis that fenarimol, an inhibitor of the biosynthesis of ECs in the animal kingdom, also affects the content of endogenous ECs in plants using winter wheat Triticum aestivum L. as a model plant. The levels of endogenous ECs in winter wheat, including the estimation of their changes during a course of different temperature treatments, have been determined using a sensitive analytical method based on UHPLC-MS/MS. Under our experimental conditions, four substances of EC character were detected in the tissue of interest in amounts ranging from less than 1 to over 200 pg·g−1 FW: 20-hydroxyecdysone, polypodine B, turkesterone, and isovitexirone. Among them, turkesterone was observed to be the most abundant EC and accumulated mainly in the crowns and leaves of wheat. Importantly, the level of ECs was observed to be dependent on the age of the plants, as well as on growth conditions (especially temperature). Fenarimol, an inhibitor of a cytochrome P450 monooxygenase, was shown to significantly decrease the level of naturally occurring ECs in experimental plants, which may indicate its potential use in studies related to the biosynthesis and physiological function of these substances in plants.

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