Provenance variation in survival, growth and dry matter partitioning of Parkia biglobosa (Jacq.) R.Br. ex G.Don seedlings in response to water stress

2012 ◽  
Vol 87 (1) ◽  
pp. 59-71 ◽  
Author(s):  
Z. H-N. Bouda ◽  
J. Bayala ◽  
B. Markussen ◽  
J. S. Jensen ◽  
A. Ræbild
Keyword(s):  
Water Stress ◽  
Dry Matter ◽  
Parkia Biglobosa ◽  
Dry Matter Partitioning ◽  
Provenance Variation ◽  
Response To Water

scholarly journals Growth and dry matter partitioning response in cereal-legume intercropping under full and limited irrigation regimes

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Amanullah ◽  
Shah Khalid ◽  
Farhan Khalil ◽  
Mohamed Soliman Elshikh ◽  
Mona S. Alwahibi ◽  
...  
Keyword(s):  
Water Stress ◽  
Dry Matter ◽  
Dry Weight ◽  
Pigeon Pea ◽  
Growth Stages ◽  
Dry Matter Partitioning ◽  
Sole Crop ◽  
Irrigation Regimes ◽  
Storage Organs ◽  
Winter Crops

AbstractThe dry matter partitioning is the product of the flow of assimilates from the source organs (leaves and stems) along the transport route to the storage organs (grains). A 2-year field experiment was conducted at the agronomy research farm of the University of Agriculture Peshawar, Pakistan during 2015–2016 (Y1) to 2016–2017 (Y2) having semiarid climate. Four summer crops, pearl millet (Pennisetum typhoidum L.), sorghum (Sorghum bicolor L.) and mungbean (Vigna radiata L.) and pigeonpea (Cajanus cajan L.) and four winter crops, wheat (Triticum aestivum L.), barley (Hordeum vulgare L.), fababean (Vicia faba) and rapeseed (Brassica napus) were grown under two irrigation regimes (full vs. limited irrigation) with the pattern of growing each crop either alone as sole crop or in combination of two crops in each intercropping system under both winter and summer seasons. The result showed that under full irrigated condition (no water stress), all crops had higher crop growth rate (CGR), leaf dry weight (LDW), stem dry weight (SDW), and spike/head dry weight (S/H/PDW) at both anthesis and physiological maturity (PM) than limited irrigated condition (water stress). In winter crops, both wheat and barley grown as sole crop or intercropped with fababean produced maximum CGR, LDW, SDW, S/H/PDW than other intercrops. Among summer crops, sorghum intercropped either with pigeon pea or with mungbean produced maximum CGR, LDW, SDW, and S/H/PDW at both growth stages. Sole mungbean and pigeon pea or pigeon pea and mungbean intercropping had higher CGR, LDW, SDW, S/H/PDW than millet and sorghum intercropping. On the other hand, wheat and barley grown as sole crops or intercropped with fababean produced maximum CGR, LDW, SDW, and S/H/PDW than other intercrops. Fababean grown as sole crop or intercropped with wheat produced higher CGR, LDW, SDW, and S/H/PDW at PM than intercropped with barley or rapeseed. From the results it was concluded that cereal plus legume intercropping particularly wheat/fababean in winter and sorghum/pigeon pea or sorgum/mungbean in summer are the most productive intercropping systems under both low and high moisture regimes.

De-coupling seasonal changes in water content and dry matter to predict live conifer foliar moisture content

2014 ◽  
Vol 23 (4) ◽  
pp. 480 ◽  
Author(s):  
W. Matt Jolly ◽  
Ann M. Hadlow ◽  
Kathleen Huguet
Keyword(s):  
Water Stress ◽  
Moisture Content ◽  
Water Content ◽  
Seasonal Variations ◽  
Seasonal Changes ◽  
Dry Matter ◽  
Water Mass ◽  
Water Status ◽  
Dry Mass ◽  
Dry Matter Partitioning

Live foliar moisture content (LFMC) significantly influences wildland fire behaviour. However, characterising variations in LFMC is difficult because both foliar mass and dry mass can change throughout the season. Here we quantify the seasonal changes in both plant water status and dry matter partitioning. We collected new and old foliar samples from Pinus contorta for two growing seasons and quantified their LFMC, relative water content (RWC) and dry matter chemistry. LFMC quantifies the amount of water per unit fuel dry weight whereas RWC quantifies the amount of water in the fuel relative to how much water the fuel can hold at saturation. RWC is generally a better indicator of water stress than is LFMC. We separated water mass from dry mass for each sample and we attempted to best explain the seasonal variations in each using our measured physiochemical variables. We found that RWC explained 59% of variation in foliar water mass. Additionally, foliar starch, sugar and crude fat content explained 87% of the variation in seasonal dry mass changes. These two models combined explained 85% of the seasonal variations in LFMC. These results demonstrate that changes to dry matter exert a stronger control on seasonal LFMC dynamics than actual changes in water content, and they challenge the assumption that LFMC variations are strongly related to water stress. This methodology could be applied across a range of plant functional types to better understand the factors that drive seasonal changes in LFMC and live fuel flammability.

Effects of water stress on dry matter content and partitioning in four grapevine cultivars (Vitis vinifera L.)

OENO One ◽  
2005 ◽  
Vol 39 (1) ◽  
pp. 1 ◽  
Author(s):  
María Gómez-del-Campo ◽  
Pilar Baeza ◽  
C. Ruiz ◽  
José Ramón Lissarrague
Keyword(s):  
Water Stress ◽  
Dry Matter ◽  
Irrigation Treatment ◽  
Fruit Size ◽  
Matter Content ◽  
Dry Matter Content ◽  
Dry Matter Accumulation ◽  
Full Irrigation ◽  
Dry Matter Partitioning ◽  
Accumulation Pattern

<p style="text-align: justify;">Three-year-old grapevines of four cultivars (Garnacha tinta (Grenache noir), Tempranillo, Chardonnay and Airén) were grown on 35 L container under full irrigation and restricted irrigation conditions in order to determine the effect of water stress on carbohydrate allocation. Total grapevine dry matter was measured at pruning, fruitset, veraison and harvest. Roots, wood, shoots, leaves and clusters were dried separately. Shoots were the most affected organs by water stress, while wood was the least affected. Vines under water stress partitioned more dry matter to wood and roots to the detriment of fruits and shoots. The period from fruitset to veraison was the most active for dry matter accumulation under conditions of stress, whereas non-water stressed vines accumulated more dry matter from veraison to harvest. Under both irrigation treatments, fruits competed with roots for dry matter partitioning. Irrigation treatment and cultivar determined fruit size. Fruit size determined dry matter partitioning between organs and the dry matter accumulation pattern.</p>

Effect of water stress on growth and dry matter partitioning ofConocarpus erectus

2016 ◽  
pp. 163-172 ◽  
Author(s):  
A. Riaz ◽  
U. Tariq ◽  
M. Qasim ◽  
M.R. Shaheen ◽  
A. Iqbal ◽  
...  
Keyword(s):  
Water Stress ◽  
Dry Matter ◽  
Dry Matter Partitioning ◽  
Effect Of Water

Dry Matter Partitioning and Vegetative Growth of Young Peach Trees Under Water Stress

1990 ◽  
Vol 17 (1) ◽  
pp. 23 ◽  
Author(s):  
SL Steinberg ◽  
JC Miller ◽  
MJ Mcfarland
Keyword(s):  
Water Stress ◽  
Biomass Production ◽  
Dry Matter ◽  
Root Production ◽  
Total Biomass ◽  
Leaf Production ◽  
Dry Matter Partitioning ◽  
Two Factors ◽  
The Difference ◽  
Peach Trees

Water stress affected the growth and dry matter partitioning of young peach trees grown in pots in a greenhouse. When the trees were subjected to four watering treatments, 100, 75, 50 and 25% of full water, total dry matter production was reduced with each incremental decrease in applied water. Despite large differences in biomass production, the difference in midday leaf water potential between the wettest and driest treatment was not greater than 0.6 MPa. This was partially attributed to lower leaf conductance in the drier treatments. A reduction or halting of lateral branching and new leaf production was observed soon after water stress was imposed, and these two factors were the major contributors to differences in tree biomass production. Root production was maintained at similar levels in all but the severest stress treatment. As a result, the root fraction of total biomass increased from 0.4 to 0.6 as the level of stress increased from 75 to 50% of full water. Currently growing leaves and internodes of the drier treatments reached maturity at a smaller size. In contrast to internode lengthening, leaf area expansion slowed in the final growth phase. This correlated well with leaf unfolding.

Effect of water stress on growth and dry matter distribution of four dryland species used in tree planting in the Sahel

2021 ◽  
Author(s):  
Philippe Bayen ◽  
Anne Mette Lykke ◽  
François Wenemi Kagambèga ◽  
Fidèle Bognounou ◽  
Adjima Thiombiano
Keyword(s):  
Water Stress ◽  
Survival Rate ◽  
Dry Matter ◽  
Field Capacity ◽  
Matter Distribution ◽  
Dry Matter Distribution ◽  
Severe Water Stress ◽  
Below Ground ◽  
Collar Diameter ◽  
Response To Water

Abstract Water stress is the most important factor limiting early survival and growth of seedlings in arid and semi-arid zones. Many woody species develop adaptive mechanisms in response to water stress. This study assesses survival rate, growth and dry matter distribution in response to water stress in four dryland species (Senegalia dudgeonii, Senegalia gourmaensis, Vachellia nilotica and Vachellia tortilis). A total of 240 seedlings (60 per species) were grown using a completely randomized block design with three replicates in each of three water treatments (control = 100 percent of field capacity; moderate water stress = 50 percent of field capacity; severe water stress = 25 percent of field capacity) with a 7 day watering frequency. Data were collected on seedling survival, height, collar diameter, leaf production and dry matter distribution. Survival rate of the four species was not affected by water stress. However, the morphological responses to water stress were significantly different between species. Water stress resulted in significant reductions in height and collar diameter, higher below-ground biomass and significant increase in shedding of leaves. Under water stress, S. dudgeonii, S. gourmaensis and V. tortilis invested more in root growth. The allocation pattern from above-ground to below-ground parts was found to be the main adaption to drought. In contrast, V. nilotica gave preference to above-ground development, which could be an indication that the seedlings are adapted to grow under severe water stress. The results confirm the interspecific genetic differences in growth and dry matter distribution among species. These variations in water stress response may be used as criteria for species selection for degraded land reforestation.

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