Drought Effects on Green Pea Texture and Related Physical-Chemical Properties at Comparable Maturity

Abstract

<jats:p>Yield and seed texture were studied in green peas (<jats:italic>Pisum sativum</jats:italic> L.) subjected to drought stress during flowering and pod filling. Field experiments were conducted with two cultivars on a sandy loam soil and drought conditions were obtained using movable rain shelters. The plants were harvested at three to five stages of maturity determined by tenderometer values and the concentration of alcohol-insoluble solids (AIS). Measured variables were related to the concentration of AIS in order to eliminate the influence of maturity when comparing between stress and nonstress conditions. Drought stress during flowering or pod filling reduced yield, but did not affect the size distribution consistently. To lessen the differences caused by variation in size distribution, all quality measurements were carried out on peas graded to 8.75 to 10.2 mm. Drought stress increased the concentration of sucrose at an AIS concentration of 140 g·kg<jats:sup>-1</jats:sup>. Besides the concentration of dry matter and starch the mean pea weight and testa weight did not reflect any consistency in relation to drought-stress conditions. The sensory scores for pea mealiness was not significantly increased in drought stress, and other sensory quality attributes were unaffected. In this study, the effect of drought stress on pea texture quality is weak and inconsistent when comparisons are made at the same stage of maturity. As texture quality is highly correlated to stage of maturity, the tenderometer value or AIS concentration is reliable when determining time of harvest for the production of high quality peas irrespective of drought-stress conditions during maturation.</jats:p>

Physiological and Biochemical Characterization of the GABA Shunt Pathway in Pea (Pisum sativum L.) Seedlings under Drought Stress

“…These mechanisms include detoxification enzymes, redox status regulation, signaling pathways, protein folding and degradation, photosynthesis stability, and primary metabolism [18]. In addition, drought and low water content reduction lead to an increase in sugar and amino acid concentrations in plants [28].…”

Dependence of the Pea Grain Yield on Climatic Factors under Semi-Arid Conditions

“…However, both male and female reproductive organs are adversely affected by high temperatures, and floral organs are also vulnerable to heat stress before pollination and in the post-pollination stage [47]. Adequate moisture levels are also required during this period, as pea sensitivity to water deficiency increases during flowering and seed filling due to high evapotranspiration [48,49]. It is also noteworthy that the climatic conditions in May and June in the Rostov region are also significant factors in determining the yield of other crops.…”

Optimize Irrigation Water Use of Green Peas Under Deficit Irrigation in Semi-Arid Regions

“…In general, peas are more sensitive to water deficit during of flowering and pods/grains filling than is the vegetation stage (Lecoeur and Guilioni, 2010;and Rasaei et al, 2012). Sorensen et al (2003) reported that although the yield of green peas was affected by the drought stress but the texture quality could be maintained if green peas were harvested at the optimum maturity.…”