Response of leaf water status, stomatal characteristics, photosynthesis and yield in black gram and green gram genotypes to soil water deficit

Baroowa, Bhaswatee; Gogoi, Nirmali; Paul, Soumen; Baruah, K. K.

doi:10.1071/fp15135

Cited by 10 publications

(16 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Decreased leaf water potential (w) under stress may be due to loss of gradient (w) between the soil and roots, which is the guiding principle for water movement and decline in transpiration pull (Table 1). Our results are in line with the findings of Baroowa et al (2015) who reported similar trends of water potential in mungbean under water deficit. Among the rhizobial treatments, mean maximum leaf water potential was observed in MR 63 (-0.78 MPa) followed by MB 17a (-0.82 MPa) and it was minimum in RDF .…”

Section: Methodssupporting

confidence: 93%

Impact of Different Rhizobial Strains on Physiological Responses and Seed Yield of Mungbean [Vigna radiata (L.) Wilczek] under Field Conditions

Sapna

Sharma

2020

View full text Add to dashboard Cite

Background: Water availability is a main controlling factor for agricultural productivity. Erratic monsoon and ever-growing population limit the water accessibility to mungbean and thus reduce its yield. Rhizobia–legume interactions are environmental friendly and are very well known for boosting the production potential of mungbean. But, the screening of new and better rhizobial isolates is essential to improve mungbean yield in sub-optimal conditions. So this study was conducted with the objectives to evaluate the rhizobial isolates for the physiological traits in mungbean and to measure the association of these traits with yield under moisture stress. Methods: In this field experiment during kharif 2016, five rhizobial strains of mungbean viz. Vigna 703 + PSB strain P-36, MR 63, MR 54, MB 17a and MH 8b2 were tested with respect and in combination with RDF at two water levels viz. control and drought. Moisture stress was created by withholding irrigations at flowering and pod formation stages. Result: Growth and physiological traits were altered under moisture stress. Rhizobial isolates MR 63 and MB 17a sustained higher yield over other rhizobial strains under both moisture regimes. These strains maintained higher RWC, leaf water potential and photosynthesis during stress and appear promising for drought tolerance.

show abstract

Section: Methodssupporting

confidence: 93%

Impact of Different Rhizobial Strains on Physiological Responses and Seed Yield of Mungbean [Vigna radiata (L.) Wilczek] under Field Conditions

Sapna

Sharma

2020

View full text Add to dashboard Cite

show abstract

“…Stomatal limitations reduced the gaseous exchange between leaf and atmosphere which is the main cause for reduced A, E and gs. These corroborates with earlier reports in legume crops such as Fababean [79], chickpea [77], common bean [80,81] and mungbean [22,82] under drought stress. The physiological mechanism has been explained in other studies which states that stomatal closure mediated by ABA during drought stress is the primary limitation of photosynthesis [83,84].…”

Section: Combined Stress Influences Water Relation Pigment Concentrasupporting

confidence: 93%

“…In the present study, total chlorophyll was significantly reduced under drought stress in comparison to control in sensitive accessions (IC73401 and IC280489). Several reports mentioned a reduction in chlorophyll in several crops exposed to drought stress such as in common bean [20], cluster bean [21], soybean [76], chickpea [77] and mungbean [22]. Although increased chlorophyll concentration is a typical trait under low P stress but we did not find significant change which corroborates with results in common bean [78].…”

Section: Combined Stress Influences Water Relation Pigment Concentrasupporting

confidence: 89%

“…Accumulation of shoot biomass was adversely affected by low P and drought stress in the present study. Similar reduction in shoot biomass was reported in mungbean [58] and soybean [50] under low P, and less dry matter in mungbean under drought [22]. We also noted reduction in P concentration and P uptake in shoot and grain under low P, drought and combined stress which is obviously due to low tissue P concentration and less soil moisture availability limiting P mobility.…”

Section: Influence Of Combined Stress On Growth Yield P Uptake and supporting

confidence: 86%

See 1 more Smart Citation

Physiological Basis of Combined Stress Tolerance to Low Phosphorus and Drought in Mungbean Core Set Dderived from Diverse Germplasm

Sk¹,

Pandey²,

Gayacharan³

et al. 2020

Preprint

View full text Add to dashboard Cite

To understand the physiological basis of tolerance to combined stresses to low phosphorus (P) and drought in mungbean (Vigna radiata (L.) R. Wilczek), a core set of 100 accessions were evaluated in hydroponics at sufficient (250 μM) and low (3 μM) P, and exposed to drought (dehydration) stress. The principal component analysis and ranking of accessions based on relative values revealed that IC280489, EC397142, IC76415, IC333090, IC507340 and IC121316 performed superior while IC119005, IC73401, IC488526 and IC325853 performed poorly in all treatments. Selected accessions were evaluated in soil under control (sufficient P, irrigated), low P (without P, irrigated), drought (sufficient P, withholding irrigation) and combined stress (low P, withholding irrigation). Under combined stress, a significant reduction in gas exchange traits (photosynthesis, stomatal conductance, transpiration, instantaneous water use efficiency), P uptake in seed and shoot was observed under combined stress as compared to individual stresses. Among accessions, IC488526 was most sensitive while IC333090 and IC507340 exhibited tolerance to individual or combined stress. The water balance and low P adaptation traits like membrane stability index, relative water content, specific leaf weight, organic acid exudation, biomass, grain yield and P uptake can be used as physiological markers to evaluate for agronomic performance. Accessions with considerable resilience to low P and drought stress can be either used as ‘donors’ in Vigna breeding program or cultivated in areas with limited P and water availability or both.

show abstract

“…One interesting trend observed in both formative stages was that significantly higher Gs during water deficit conditions appear to have better agronomic characteristics and lower EC values, as well as higher AOA. It is already known how significant stomatal conductance is during drought conditions [55]. Reduced photosynthetic rate, as well as stomatal conductance during drought, resulted in low levels of internal CO 2 concentration due to inhibition of photosynthetic enzymes such as Rubisco [45,56].…”

Section: Discussionmentioning

confidence: 99%

Effects of Water Regime, Genotype, and Formative Stages on the Agro-Physiological Response of Sugarcane (Saccharum officinarum L.) to Drought

Reyes

Carpentero

Santos

et al. 2020

Plants

View full text Add to dashboard Cite

Drought during the formative stages of a plant’s growth triggers a sequence of responses to maintain optimal growing conditions, but often at the expense of crop productivity. Two field experiments were conducted to determine the effect of drought on 10 high-yielding sugarcane genotypes at two formative stages (the tillering stage (TS) and stalk elongation (SS)), within 30 days after treatment imposition. The experiments followed a split-plot in a randomized complete block design with three replicates per genotype. Agro-physiological responses to drought were observed to compare the differences in the response of sugarcane during the two formative stages. Drought significantly reduced total chlorophyll content (Chl) and stomatal conductance (Gs) for both formative stages, while significantly increasing total scavenging activity (AOA) and electrolyte leakage (EC). A higher level of Chl was observed in the stalk elongation stage compared to the tillering stage; however, lower AOA coupled with higher EC in the stalk elongation stage suggests higher drought susceptibility. Pearson's correlation analysis revealed a stronger correlation between plant height, internode length, Chl, AOA, EC, and Gs at the tillering stage relative to the stalk elongation stage. Moreover, results from the multivariate analysis indicate the different contribution values of each parameter, supplementing the hypothesized difference in response between the two formative stages. Multivariate analysis clustered the 10 genotypes into groups based on the traits evaluated, suggesting the ability of these traits to detect differences in a sample population. The observed relationship among traits during the two formative stages of sugarcane will be significant in screening and identifying drought-susceptible and drought-tolerant genotypes for variety development studies.

show abstract

Response of leaf water status, stomatal characteristics, photosynthesis and yield in black gram and green gram genotypes to soil water deficit

Cited by 10 publications

References 16 publications

Impact of Different Rhizobial Strains on Physiological Responses and Seed Yield of Mungbean [Vigna radiata (L.) Wilczek] under Field Conditions

Impact of Different Rhizobial Strains on Physiological Responses and Seed Yield of Mungbean [Vigna radiata (L.) Wilczek] under Field Conditions

Physiological Basis of Combined Stress Tolerance to Low Phosphorus and Drought in Mungbean Core Set Dderived from Diverse Germplasm

Effects of Water Regime, Genotype, and Formative Stages on the Agro-Physiological Response of Sugarcane (Saccharum officinarum L.) to Drought

Contact Info

Product

Resources

About