Injuries to Reproductive Development Under Water Stress, and Their Consequences for Crop Productivity

1997 ◽  
Vol 1 (1) ◽  
pp. 223-248 ◽  
Author(s):  
Hargurdeep S. Saini ◽  
Sylvie Lalonde
Keyword(s):  
Water Stress ◽  
Reproductive Development ◽  
Crop Productivity

scholarly journals Exploring possibilities of enhancing water use efficiency in potato: A review

2017 ◽  
Vol 9 (2) ◽  
pp. 836-845
Author(s):  
Rinki Khobra ◽  
Ashutosh Srivastava ◽  
Pinky Raigond ◽  
Alka Joshi ◽  
Som Dutt ◽  
...  
Keyword(s):  
Water Stress ◽  
Water Use Efficiency ◽  
Water Use ◽  
Molecular Breeding ◽  
Potato Crop ◽  
Crop Productivity ◽  
Water Stress Tolerance ◽  
Agriculture Sustainability ◽  
Global Agriculture ◽  
Use Efficiency

Climate change threatens the global agriculture sustainability. Among different kinds of abiotic stresses, water stress is the most devastating component which curtails potato crop productivity. Our recent knowledge is limited concerning water stress tolerance and water use efficiency in potato. Many efforts are being made by the scientific community to reduce water use and to produce “more crop per drop”. This review elaborates quantitative and qualitative aspects of multiple stress mechanisms and their regulating system related to present scenario of water use efficiency (WUE) requirements. WUE can only be improved by using multidisciplinary promising research approaches like molecular breeding, high throughput genotyping, multi-gene transfer and bioinformatics applications to unleash the information needed to exploitation of required traits in potato.

scholarly journals Differential Transcriptomic Regulation in Sweet Orange Fruit (Citrus sinensis L. Osbeck) Following Dehydration and Rehydration Conditions Leading to Peel Damage

2021 ◽  
Vol 12 ◽  
Author(s):  
Paco Romero ◽  
Maria Teresa Lafuente ◽  
Fernando Alferez
Keyword(s):  
Water Stress ◽  
Citrus Sinensis ◽  
Expression Profiles ◽  
Citrus Fruit ◽  
Crop Productivity ◽  
Fruit Peel ◽  
Cell Wall Modification ◽  
Post Harvest ◽  
Study Results ◽  
Custom Made

Water stress is the most important environmental agent that contributes to the crop productivity and quality losses globally. In citrus, water stress is the main driver of the fruit peel disorders that impact the quality and market ability. An increasingly present post-harvest peel disorder is non-chilling peel pitting (NCPP). Non-chilling peel pitting is manifested as collapsed areas of flavedo randomly scattered on the fruit and its incidence increases due to abrupt increases in the environmental relative humidity (RH) during post-harvest fruit manipulation. In this study, we have used a custom-made cDNA microarray containing 44k unigenes from Citrus sinensis (L. Osbeck), covering for the first time the whole genome from this species, to study transcriptomic responses of mature citrus fruit to water stress. In the study, the global gene expression profiles of flavedo from Navelate oranges subjected to severe water stress are compared with those fruits subjected to rehydration stress provoked by changes in the RH during post-harvest, which enhances the development of NCPP. The study results show that NCPP is a complex physiological process that shares molecular responses with those from prolonged dehydration in fruit, but the damage associated with NCPP may be explained by unique features of rehydration stress at the molecular level, such as membrane disorganization, cell wall modification, and proteolysis.

Methods used for the improvement of crop productivity under water stress

2016 ◽  
pp. 484-505 ◽  
Author(s):  
Francisco Garcia-Sanchez ◽  
Silvia Simon-Grao ◽  
Juan G. Perez-Perez ◽  
Vicente Gimeno ◽  
Juan J. Martinez-Nicolas
Keyword(s):  
Water Stress ◽  
Crop Productivity

scholarly journals Improvement of drought tolerance in rice using line X tester mating design and biochemical molecular markers

2022 ◽  
Vol 46 (1) ◽  
Author(s):  
Almoataz Bellah Ali El-Mouhamady ◽  
Abdul Aziz M. Gad ◽  
Ghada S. A. Abdel Karim
Keyword(s):  
Water Stress ◽  
Drought Stress ◽  
Drought Tolerance ◽  
Stress Tolerance ◽  
Water Deficit ◽  
Scientific Progress ◽  
Crop Productivity ◽  
Hybrid Generation ◽  
Water Stress Tolerance ◽  
Rice Genotypes

Abstract Background Water stress, specifically the limited water resources needed to grow strategic crops, especially rice, poses a great threat to crop productivity. So, it was imperative that scientists all work together to try genetically improving the rice for drought tolerance in light of these environmental challenges. The aim of this study is trying to know the genetic behavior responsible for water-deficit tolerance in rice genotypes but at the molecular level. Moreover, this attempt will be an important leap in the process of genetic improvement in rice for water stress tolerance in Egypt. Results Twenty-three rice genotypes including eight parents and their fifteen F1 crosses or (the first hybrid generation) by line X tester analysis were evaluated for water stress tolerance during two experiments (the control and drought experiment) besides some molecular–biochemical studies for eight parents and the highest selected five crosses for water stress tolerance. The research revealed that five rice crosses out of fifteen hybrids were highly tolerant to water stress compared to the normal conditions. Data of biochemical markers indicated the presence of bands that are considered as molecular genetic markers for water-deficit tolerance in some rice genotypes, and this is the scientific progress achieved in this research. This was evident by increasing the density and concentration of SDS-protein electrophoresis besides enhancing the activities of peroxidase (POD) and polyphenol oxidase (PPO) under water-deficit conditions, which confirmed the tolerance of drought stress in the eight rice genotypes and the best five crosses from the first hybrid generation. Conclusion The five promising and superior rice hybrids showed an unparalleled tolerance to water stress in all evaluated traits under water stress treatment compared to the standard experiment. Also, biochemical and molecular parameters evidence confirmed the existence of unquestionable evidence that it represents the main nucleus for producing rice lines tolerated for drought stress under Egyptian conditions.

scholarly journals High temperature susceptibility of sexual reproduction in crop plants

2019 ◽  
Vol 71 (2) ◽  
pp. 555-568 ◽  
Author(s):  
Neeta Lohani ◽  
Mohan B Singh ◽  
Prem L Bhalla
Keyword(s):  
Heat Stress ◽  
High Temperature ◽  
Sexual Reproduction ◽  
Molecular Mechanisms ◽  
Current Knowledge ◽  
Male Gametophyte ◽  
Reproductive Development ◽  
Crop Productivity ◽  
Extreme Weather Events ◽  
Species Specific

Abstract Climate change-induced increases in the frequency of extreme weather events, particularly heatwaves, are a serious threat to crop productivity. The productivity of grain crops is dependent on the success of sexual reproduction, which is very sensitive to heat stress. Male gametophyte development has been identified as the most heat-vulnerable stage. This review outlines the susceptibility of the various stages of sexual reproduction in flowering plants from the time of floral transition to double fertilization. We summarize current knowledge concerning the molecular mechanisms underpinning the heat stress-induced aberrations and abnormalities at flowering, male reproductive development, female reproductive development, and fertilization. We highlight the stage-specific bottlenecks in sexual reproduction, which regulate seed set and final yields under high-temperature conditions, together with the outstanding research questions concerning genotypic and species-specific differences in thermotolerance observed in crops. This knowledge is essential for trait selection and genetic modification strategies for the development of heat-tolerant genotypes and high-temperature-resilient crops.

scholarly journals CROP WATER STRESS INDEX (CWSI) ESTIMATION USING MODIS DATA

2010 ◽  
Vol 3 (-) ◽  
Author(s):  
M.Rokhis Khomarudin ◽  
Parwati Sofan
Keyword(s):  
Water Stress ◽  
Surface Temperature ◽  
Land Surface ◽  
Crop Productivity ◽  
Stress Index ◽  
Crop Water ◽  
Crop Water Stress Index ◽  
Modis Land Surface Temperature ◽  
Water Stress Index ◽  
Crop Water Stress

Crop Water Stress Index (CWSI) is an index which is used to explain the amount of crop water defisiency based on canopy surface temperature. Many researches of CWSI have been done for arranging irigation water system in several crops at different areas. Beside its application in irigation system, CWSI is also known as one of parameters that can influence crop productivity. Regarding the above explanation, it is implied that CWSI is important for monitoring crop drought, arranging irigation water, and estimating crop productivity. This research is proposed to estimate CWSI using MODIS (Moderate Resolution Imaging Spectroradiometer) data which is related to Normalized Difference Vegetation Index (NDVI) and Soil Moisture Storage (ST) in paddy field. The interest area is in East Java wich is the driest area in Java Island. MODIS land surface temperature is used to estimate CWSI, while MODIS reflectance 500 m is used to estimate NDVI. They were downloaded from NASA website. Data period was from June 15th to June 30 th, 2004. Based on the correlation between NDVI and CWSI, we can estimate NDVI value when paddy water stress occured. The result showed that the largest paddy area in East Java which has high water stress is located in Bojonegoro District. The water stress areain Bojonegoro Distric increase from June 15th to June 30th, 2004. The high to medium water stress level in East Java were predicted as bare land. The CWSI has negative correlation with NDVI and ST. The CWSI 0.6 are obtained in NDVI 0.5 with ST less than 50 percent. This showed that the paddy water stress began at NDVI 0.5 and ST 50 percent. Coefficient of correlation between CWSI and NDVI is 0.58, while CWSI and ST is 0.71. The correlation model between CWSI, NDVI and ST is statistically significant. Keywords: CWSI,NDVI, ST, MODIS Land Surface Temperature, Water Stress.

scholarly journals EVALUATION OF SEED YIELD, OIL AND MINERAL CONTENTS IN-BRED PUMPKIN LINES (Cucurbita pepo L.) UNDER WATER STRESS

2020 ◽  
Vol 19 (3) ◽  
pp. 89-99
Author(s):  
Musa Seymen ◽  
Atilla Dursun ◽  
Duran Yavuz ◽  
Ertan Sait Kurtar ◽  
Aynur Özbahçe ◽  
...  
Keyword(s):  
Water Stress ◽  
Seed Yield ◽  
Block Design ◽  
Crop Productivity ◽  
Hybrid Breeding ◽  
Mineral Contents ◽  
Randomized Block Design ◽  
Hybrid Variety ◽  
Total Oil ◽  
Pure Lines

Water stress is one of the main constraints which could limits crop productivity, especially in arid and semi-arid regions characterized limited water resources. This study was conducted to investigate the seed yield, oil and mineral contents of 44 lines and 4 commercial pumpkin varieties (2 local and 2 hybrids) in irrigated and drought stress conditions. The study was conceived as a randomized block design with three replications and carried out during the 2017 growing season. On average, the irrigated plots produced 161.27 kg da–1 seed yield whereas it was 33.67 kg da–1 in non-irrigated plots. The highest yield among the commercial pumpkin varieties was obtained from the G2 hybrid variety in the irrigated conditions. On the other hand, in the non-irrigated plots, higher seed yields were obtained from G9, G34, and G36 pure lines. Drought resulted in a remarkable decrease in the total oil content and significant increase in the amount of Ca and Zn in pumpkin seeds. These results clearly indicated that G9 line, which has the highest seed yield in both irrigated and drought conditions, can be utilized as a recommendable parental pumpkin line in future hybrid breeding efforts.

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