Lavender sensitivity to water stress: Comparison between eleven varieties across two phenological stages

2022 ◽  
Vol 177 ◽  
pp. 114531
Author(s):  
Amélie Saunier ◽  
Elena Ormeño ◽  
Sandrine Moja ◽  
Catherine Fernandez ◽  
Etienne Robert ◽  
...  
Keyword(s):  
Water Stress ◽  
Phenological Stages

scholarly journals Influence of water stress on grape quality and aroma precursors in Sauvignon Blanc grown in Bolgheri area (Tuscany)

2019 ◽  
Vol 13 ◽  
pp. 03001 ◽  
Author(s):  
Eleonora Cataldo ◽  
Linda Salvi ◽  
Francesca Paoli ◽  
Sofia Sbraci ◽  
Giovan Battista Mattii
Keyword(s):  
Water Stress ◽  
Water Potential ◽  
Leaf Gas Exchange ◽  
Stem Water Potential ◽  
Phenological Stages ◽  
Sauvignon Blanc ◽  
Single Leaf ◽  
Grape Quality ◽  
Influence Of Water ◽  
Aroma Precursors

Climate change has a direct impact on the phenological stages of the grapevine, with consequences on the anticipation of aging and on the qualitative characteristics of the grapes. In fact, there is a decrease in the skin/pulp ratio, with possible reduction of the aromatic potential. This work was aimed at assessing the effects of water stress on technological maturity and thiol precursors of Sauvignon Blanc grapes in two vineyards of Bolgheri. To this purpose, 3 theses have been established: WW, well watered; WS, moderate stress; CTRL, control. During the season, measurements of single leaf gas exchange, stem water potential were made; moreover parameters of technological maturity (° Brix, acidity, pH and berry weight) and thiol precursors were analyzed. As expected, the water potential was less negative in the irrigated thesis due to the greater availability of water, as well as the highest rates of photosynthesis, transpiration and stomatal conductance. Technological analyses showed no significant differences among the treatments. The analysis of the 3MH/3-mercaptoesan-1-ol precursors showed that the WW had a greater accumulation than the other theses. These results suggest that lower water stress favors a better aromatic content.

scholarly journals Macadamia responses to mild water stress at different phenological stages

2003 ◽  
Vol 54 (1) ◽  
pp. 67 ◽  
Author(s):  
R. A. Stephenson ◽  
E. C. Gallagher ◽  
V. J. Doogan
Keyword(s):  
Water Stress ◽  
High Stress ◽  
Management Tool ◽  
Mild Stress ◽  
Floral Initiation ◽  
Xylem Water Potential ◽  
Phenological Stages ◽  
Oil Accumulation ◽  
Yield And Quality ◽  
Mild Water Stress

Mild water stress was imposed on bearing macadamia trees in through-draining lysimeters at various phenological stages. Water was withheld until a xylem water potential (Ψx) of –1.5 to 2.0 MPa was reached, this being maintained by partial water replenishment at 2-day intervals. Flowering, nut set, nut development, yield, and quality responses were assessed to identify critical, stress-sensitive stages. Stress during nut maturation was particularly detrimental to both yield and quality, although stress during floral development and the premature nut drop also had adverse effects. Low yields were due to reduced nut number and smaller nuts. Lower photosynthesis (c. 2 μmol CO2/m2.s) at –1.5 MPa would account for reduced yield and poorer quality during nut maturation when energy demands of active oil accumulation are high. Stress at floral initiation was generally not detrimental.Overall, stress restricted growth. The rate of girth growth was significantly lower when stress was applied during the dormant floral initiation stage. When stress coincided with normal periods of vegetative growth, flushing was delayed until after re-watering when greater foliage production was stimulated. Judiciously imposing mild stress may be used to manipulate macadamia phenology, although it may not necessarily conserve water. Further refinement would be needed to develop stress manipulation as a practical and reliable management tool to achieve higher yields. Water should be applied to alleviate stress during critical stages of nut development and maturation. Mild stress after the current crop is mature, however, is unlikely to be detrimental to macadamia yield or quality. It may, in fact, be beneficial through manipulation of flushing patterns that influence yield.

scholarly journals Physiological and metabolic alterations in basil (Ocimum basilicum L.) varieties under distinct soil water levels

2022 ◽  
Vol 21 (1) ◽  
pp. 94-107
Author(s):  
Larissa Santos Castro ◽  
◽  
Daniel Andres Villegas Hurtado ◽  
Adriene Aparecida Silva ◽  
Danubia Aparecida Costa Nobre ◽  
...  
Keyword(s):  
Water Stress ◽  
Water Availability ◽  
Ocimum Basilicum ◽  
Water Levels ◽  
Physiological Changes ◽  
Medicinal Species ◽  
Phenological Stages ◽  
Metabolic Alterations ◽  
Physiological Tolerance ◽  
Metabolic Characteristics

Basil (Ocimum basilicum L.) is a medicinal species used in several areas, such as food, medicines and cosmetics, and the understanding of its physiological behavior under environmental conditions is of paramount importance for the improvement of cultivation methods. The objective of this study was to evaluate the influence of different water availability under physiological, biochemical and metabolic characteristics, in three distinct genotypes: 'Alfavaca basilicão', 'Gennaro de menta' and 'Grecco à palla', during two different phenological stages (vegetative and reproductive). It was found that the water deficit promotes physiological changes to tolerate water stress, and the studied genotypes have different routes to achieve this physiological tolerance, which culminates in a distinct accumulation of metabolites in plants, and can be considered interesting if the final product is the production of essential oils.

Effects of water stress applied at various phenological stages on yield, quality, and water use efficiency of melon

2021 ◽  
Vol 246 ◽  
pp. 106673
Author(s):  
Duran Yavuz ◽  
Musa Seymen ◽  
Nurcan Yavuz ◽  
Hacer Çoklar ◽  
Muhammet Ercan
Keyword(s):  
Water Stress ◽  
Water Use Efficiency ◽  
Water Use ◽  
Phenological Stages ◽  
Use Efficiency ◽  
Yield Quality

scholarly journals Performance of soybean plants subject to water deficit in different development stages

2021 ◽  
pp. 374-379
Author(s):  
Leonardo Pereira da Silva Brito ◽  
Farley Silva Santana ◽  
Gabriel dos Santos Carvalho ◽  
Daniela Vieira Chaves
Keyword(s):  
Water Stress ◽  
Block Design ◽  
Summer Rainfall ◽  
Grain Filling ◽  
Index Number ◽  
Phenological Stages ◽  
Randomized Block Design ◽  
Soybean Plants ◽  
Number Of Branches ◽  
Phenological Phases

Soybean plants are constantly exposed to abiotic stresses that compromise production, among these, in areas of Brazilian Cerrado, mainly in the northeast region, periods of drought can occur due to irregular and summer rainfall. Thus, the objective of this work was to determine the physiological response of Monsoy 9350 soybean at different stages of development, when subjected to water stress. The experiment was conducted in a greenhouse, in the experimental area of the campus of the Universidade Federal do Piauí (UFPI) in Bom Jesus-PI, assembled in a 3x3 factorial scheme, with water in the soil at three levels (50% VTP; 75% VTP and 100% VTP) and three phenological phases, budding to bloom (BF); bloom to complete grain filling (FE) and budding to complete grain filling (BE), the experiment consisted of 9 treatments, in a randomized block design, containing 4 replications. The evaluation of the experiment was standardized according to the phenological stages and not according to the time. The following variables were evaluated: plant height, internode length, internode thickness, number of branches, chlorophyll index, number of flowers, insertion of the first pod and number of pods. According to the evaluated results, the water stress in soybean for cultivating Monsoy 9350 mainly affects the period from budding to bloom, interfering negatively in height, chlorophyll and number of pods.

scholarly journals Effect of water stress at different phenological stages of muskmelon (Cucumis melo L)

2018 ◽  
Author(s):  
G. N. Nwokwu ◽  
L. G. Ekwu ◽  
E. B. Utobo
Keyword(s):  
Water Stress ◽  
Field Experiments ◽  
Growth And Yield ◽  
Net Income ◽  
State University ◽  
Phenological Stages ◽  
Effect Of Water ◽  
Number Of Leaves ◽  
Dry Seasons ◽  
Cucumis Melo L

Field experiments were carried out at Faculty of Agriculture and Natural Resource Management, Ebonyi State University, Abakaliki in 2011 and 2012 dry seasons to study the effect of water stress at different phenological stages of muskmelon. Results revealed that watering intervals of every six days significantly influenced number of leaves, number of branches and days to 50% flowering.During flowering phase, the plots that were watered in every six and nine days flowered late while early flowering were recorded by plots that were watered once a day and every three days. The higest yield of muskmelon was observed in irrigation intervals of six days.Also watering frequency of six days intervals had maximum net income, closely followed by nine days intervals. It can be inferred that watering frequency of every six days intervals significantly affected both growth and yield characters of the crop studied at different phenological stages and it could be recommended for growing the crop in the study area.

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