Varietal differences in the response of potatoes to repeated short periods of water stress in hot climates. 2. Tuber yield and dry matter accumulation and other tuber properties

1983 ◽  
Vol 26 (4) ◽  
pp. 315-321 ◽  
Author(s):  
D. Levy
Keyword(s):  
Water Stress ◽  
Dry Matter ◽  
Tuber Yield ◽  
Dry Matter Accumulation ◽  
Varietal Differences

Fruit Growth and Dry Matter Accumulation in Grapefruit During Periods of Water Withholding and After Reirrigation

1988 ◽  
Vol 15 (5) ◽  
pp. 633 ◽  
Author(s):  
A Cohen ◽  
A Goell
Keyword(s):  
Water Stress ◽  
Dry Matter ◽  
Volume Growth ◽  
Fruit Growth ◽  
Dry Matter Accumulation ◽  
Fresh Weight

Changes in volume, fresh weight and dry matter (DM) contents were followed in fruits from girdled and non-girdled branches borne on regularly irrigated (RI) as well as water-stressed (S) trees. Water stress was imposed by withholding irrigation for various periods. The results indicate that, even during prolonged periods of drought, DM accumulation in fruits on S trees was only slightly impaired, even when fruit volume growth was reduced to zero or even to shrinkage. After irrigation was resumed, fruits from S trees grew faster than those from RI trees, indicating that some of the DM which had accumulated was available for volume growth. The possibility of using the rate of DM accumulation in the fruit as an indicator for the timing of irrigation is discussed.

scholarly journals Alteration of dry matter accumulation under soil moisture fluctuation stress in rice (Oryza sativa L.)

2021 ◽  
pp. 757-763
Author(s):  
Cut Nur Ichsan ◽  
Bakhtiar Basyah ◽  
Sabaruddin Zakaria ◽  
Efendi Efendi
Keyword(s):  
Water Stress ◽  
Dry Matter ◽  
Dry Weight ◽  
Shoot Length ◽  
Root Weight ◽  
Dry Matter Accumulation ◽  
Root Depth ◽  
Rice Varieties ◽  
Root Dry Weight ◽  
Shoot Weight

Drought-flood abrupt alterations (DFAA) is a condition in drought season when sudden rain inundate rice plants. These events are due to the high frequency of extreme climate events that might pose a threat to rice productivity. DFAA causes cumulative stress on rice which affects crop growth and alters dry matter accumulation. This study aims to understand the effect of DFAA to dry matter accumulation by assessing six rice varieties under DFAA. Three treatments were provided such as continuously irrigated as non-water stress (NS) as a control; drought to water stress -35 kPa (DFAA1) followed by sudden flood; drought to severe water stress -70 kPa (DFAA2) followed by abrupt floods; repeated until harvest. The study found that the alteration of dry matter accumulation was determined by root length, root weight, shoot length and shoot weight. Only varieties that are able to increase root depth under water stress fluctuation will be able to maintain the yield. The results of study showed that root depth was positively correlated with shoot length (r = 0.68), shoot weight (r = 0.62), root weight (r = 0.57), percentage of filled grain (r = 0.55) and number of filled grain per hill (r = 0.49). Shoot length was positively correlated with shoot weight (r = 0.83), root weight (r = 0.75) and the number of filled grain (r = 0.62), while shoot weight was only positively correlated with root weight (r = 0.88). This means that only root depth and shoot length can increase the seed setting rate and the number of filled grains per hill. Furthermore, at DFAA2, the percentage of filled grain was highest in Sipulo followed by Bo Santeut, Sanbei, Towuti and Situ Patenggang, which mean that varieties with deeper and heavier root dry weight can maintain higher yields than shallow and low root dry weight. The result of the study may allow to select rice varieties that are resistant to multilevel water-stress and able to maintain the potential yield, by looking at root depth, root dry weight, and through their grain yield in general. These traits could become key indicators for resistance to DFAA stress in rice. It is also necessary to pay attention to the fluctuation of soil water content in critical phases, especially in the reproductive phase and grain filling

scholarly journals Yield Response of Soybean (Glycine max L.) Genotypes to Water Deficit Stress

2017 ◽  
Vol 19 (2) ◽  
pp. 51-60 ◽  
Author(s):  
Afsana Mimi ◽  
MA Mannan ◽  
QA Khaliq ◽  
MA Baset Mia
Keyword(s):  
Water Stress ◽  
Water Deficit ◽  
Yield Components ◽  
Dry Matter ◽  
Research Field ◽  
Yield Response ◽  
Water Deficit Stress ◽  
Dry Matter Accumulation ◽  
Soybean Genotypes ◽  
Glycine Max L

An experiment was carried out at research field of Agronomy, Department of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Salna, Gazipur from December 2013 to April 2014. Four soybean genotypes viz. i) G 00022 ii) Galarsum iii) BARI Soybean-5 and iv) G 00197 were grown in the field to evaluate the effects of water deficit stress on dry matter accumulation and yield. Plants were subjected to water stress that is irrigation was withdrawn at Blooming stage (R1) and Full Pod (R4 stages up to maturity. Dry matter accumulation, yield and yield components were reduced by the soil water deficit stress and reduction was higher at R1 stage than R4 stage of water stress. Among the genotypes, G 00022 showed the highest tolerance, while G 00197 was highly susceptible in all the water stress conditions. It was found that higher water deficit stress tolerance in G 00022 was associated with higher accumulation of leaf, stem, root and total dry matter under water stress condition.Bangladesh Agron. J. 2016 19(2): 51-60

Effects of water stress on dry matter accumulation and translocation in winter wheat cultivars planted at different ages

2013 ◽  
Vol 21 (8) ◽  
pp. 943-950
Author(s):  
Ling HUANG ◽  
Yang GAO ◽  
Xin-Qiang LI ◽  
Xin-Qiang QIU ◽  
Xiao-Jun SHEN ◽  
...  
Keyword(s):  
Water Stress ◽  
Winter Wheat ◽  
Dry Matter ◽  
Dry Matter Accumulation ◽  
Wheat Cultivars ◽  
Different Ages ◽  
Winter Wheat Cultivars

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>

scholarly journals Germination and tolerance of cowpea (Vigna unguiculata) cultivars to water stress

2018 ◽  
Vol 22 (6) ◽  
pp. 407-411 ◽  
Author(s):  
Emanoela P. de Paiva ◽  
Francisco V. da S. Sá ◽  
Salvador B. Torres ◽  
Marcos E. B. Brito ◽  
Romulo C. L. Moreira ◽  
...  
Keyword(s):  
Water Stress ◽  
Experimental Design ◽  
Seed Germination ◽  
Dry Matter ◽  
Euclidean Distance ◽  
Development Stage ◽  
Dry Matter Accumulation ◽  
Initial Development ◽  
Cowpea Cultivars ◽  
Randomized Experimental Design

ABSTRACT The objective of this study was to evaluate the tolerance of cowpea cultivars to water stress, during seed germination and seedling establishment. For this, a completely randomized experimental design was used in a factorial scheme consisting of nine cultivars of cowpea (BRS Guariba, BRS Potengi, BRS Itaim, BRS 17 Gurguéia, BRS Aracê, Paulistinha, Maratanã, Costela-de-Vaca and Canapu-Branco) and two levels of osmotic potential induced by PEG 6000 (0.0 MPa (control) and -0.4 MPa) in four replicates of 50 seeds. The variables analysed were germination, germination first count, root and shoot lengths, and dry matter accumulation of shoots and roots. The dissimilarity between the genotypes was also determined by Euclidean distance. Germination and initial development of cowpea cultivars are impaired by the reduction in the potential to -0.4 MPa. The cultivars BRS Guariba, BRS Aracê, Paulistinha and Canapu-Branco are the most tolerant to water stress, while BRS Potengi, BRS Itaim, BRS 17 Gurguéia, BRS Maratanã and Costela-de-Vaca are the most sensitive in the early development stage.

Estimating Potato Tuber Yield in a Sub-tropical Environment with Simple Radiation-Based Models

1995 ◽  
Vol 31 (1) ◽  
pp. 65-73 ◽  
Author(s):  
S. S. Prihar ◽  
V. K. Arora ◽  
G. Singh ◽  
R. Singh
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Radiation Effects ◽  
Dry Matter ◽  
Tuber Yield ◽  
Tropical Environment ◽  
Dry Matter Accumulation ◽  
Linear Change ◽  
Radiation Level ◽  
Area Index

SummaryDry matter and tuber yields of potato grown in a sub-tropical environment were estimated employing simple radiation-based models which require meteorological information on air temperature and solar radiation. Two versions of the MacKerron and Waister (1985) model, in which estimation of dry matter accumulation relies on a single composite parameter, radiation use efficiency (RUE), were compared with the Versteeg and Van Keulen (1986) model, which explicitly accounts for temperature and radiation effects on dry matter accumulation. In the original version of the MacKerron and Waister model, a linear change in the radiation interception factor with leaf area index is assumed; in the modified version an exponential change in the interception factor with leaf area index is considered. The accumulation of dry matter estimated from all three models was close to the measured values throughout the growing season, but estimates of tuber yield differed widely. Our analysis showed that the best agreement with measured values was obtained using the MacKerron and Waister linear model with RUE values adjusted according to the incident radiation level.Estimatión del rendimiento del tubérculo de la patata

scholarly journals Tuber yield and quality of potato chips as affected by mulch, variety, and potash levels under western Terai, Nepal

2013 ◽  
Vol 2 ◽  
pp. 121-132
Author(s):  
R Dhakal ◽  
SK Sah ◽  
SM Shakya ◽  
KB Basnet
Keyword(s):  
Dry Matter ◽  
Tuber Yield ◽  
Reducing Sugar ◽  
Potato Chips ◽  
Dry Matter Content ◽  
Dry Matter Accumulation ◽  
Net Return ◽  
Yield And Quality ◽  
Tuber Production

An experiment was conducted at Divyapuri of Nawalparasi district in the western Terai during winter season 2008/09. There were 16 treatments consisting of two mulch levels (mulched and no mulch) as main plot, two varieties (Kufri Chipsona-1 and Kufri Chipsona-2) as sub plot and four levels of potash (0, 50, 100 and 150 kg K2O /ha) as sub-sub plot arranged in split-split plot design with four replications to evaluate the effect of these treatments on tuber production and their effect on quality of potato chips. The result showed that plant height, number of shoot per plant, dry matter accumulation, number and weight of tuber per plant and tuber yield were significantly higher in Kufri Chipsona-2 than in Kufri Chipsona-1. Lower reducing sugar and browning percent of chips and higher dry matter content and chips recovery were also recorded in Kufri Chipsona-2 compared to Kufri Chipsona-1. Simple economic analysis on gross return, net return and B/C ratio were higher in Kufri Chipsona-2. However, increasing levels of potash from 0-150 kg K2O /ha increased the dry matter accumulation, LAI, number and weight of tuber per plant. The result also showed that as the level of potash increased there was a decrease level of reducing sugar and browning of chips as well. On the other hand, higher potash levels increased the percentage of fat content and recovery of chips. Also increase in potash levels resulted to increase in gross return, net return, and B/C ratio. There was no effect of mulching levels on tuber yield and quality of chips recovery. Of the two varieties, Kufri Chipsona-2 with 100 kg K2O/ha was found suitable for tuber production and recovery of chips quality. DOI: http://dx.doi.org/10.3126/ajn.v2i0.7527 Agronomy Journal of Nepal (Agron JN) Vol. 2: 2011 pp.121-132

Sign in / Sign up

Export Citation Format

Share Document