Response of root characteristics and yield in peanut under terminal drought condition

Junjittakarn, Junya; Girdthai, Teerayoot; Jogloy, Sanun; Vorasoot, Nimitr; Patanothai, A.

doi:10.4067/s0718-58392014000300001

Cited by 21 publications

(19 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The RI for YT was higher than 47 % for all genotypes, with cultivar IAC Tatu ST being the most sensitive to water deficit conditions with an RI of 68 % (Table 2). Similar results were reported by Junjittakarn et al (2014), who observed that water deficits at the end of the peanut growth cycle affected Positive RI values were observed for all evaluated parameters for most genotypes, which indicates that water deficits caused physiological changes in plants, particularly on the parameters PP and YT, which were reduced ( Table 2). The production component most affected by water deficit was the number of pods, although in the BRS Havana cultivar and inbred line DW (kg ha yield-related characteristics, such as pod DW and the harvest index.…”

Section: Resultssupporting

confidence: 77%

Crescimento e produtividade de cultivares e linhagens de amendoim submetidas a déficit hídrico

Arruda

Moda-Cirino

Buratto

et al. 2015

Pesqui. Agropecu. Trop.

View full text Add to dashboard Cite

RESUMO O déficit hídrico durante o desenvolvimento do amendoinzeiro prejudica vários processos fisiológicos da planta e reduz sua produtividade. Este estudo objetivou avaliar o rendimento de grãos, componentes de produção e crescimento de cultivares e linhagens de amendoim submetidas a déficit hídrico, em condições de campo. O delineamento experimental foi o de blocos ao acaso, com parcelas subdivididas e três repetições. Os tratamentos de déficit hídrico (com e sem) constituíram as parcelas e os genótipos avaliados (IAC Tatu ST, BR1, BRS Havana, Col 72 e Col 82) as subparcelas. A irrigação foi suspensa nas parcelas submetidas à deficiência hídrica entre 35 e 75 dias após a emergência. O crescimento das plantas, massa seca da parte aérea e área foliar foram afetados negativamente pelo déficit hídrico. Verificou-se incremento da diferença entre as parcelas com e sem deficiência hídrica, conforme o aumento do período de supressão de água. A cultivar BRS Havana e a linhagem Col 82 apresentaram tolerância moderada à seca, com os maiores rendimentos de grãos em condição de déficit hídrico. O déficit hídrico foi responsável por redução de 68 % no rendimento de grãos na cultivar IAC Tatu ST, 44 % no número de vagens por planta na linhagem Col 82, 11 % no número de sementes por vagem na linhagem Col 72 e 11 % na massa de 100 sementes na cultivar BRS1.

show abstract

Section: Resultssupporting

confidence: 77%

Crescimento e produtividade de cultivares e linhagens de amendoim submetidas a déficit hídrico

Arruda

Moda-Cirino

Buratto

et al. 2015

Pesqui. Agropecu. Trop.

View full text Add to dashboard Cite

show abstract

“…The initial plant morphological response to drought stress is the growth rate. Reduced growth may be an adaptive response to abiotic stress (Junjittakarn et al, 2014). Plant growth is one parameter in the drought-sensitive morphological processes caused by the decreased turgor pressure during drought stress (Misra et al, 2002;Inostroza et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Changes in physiological and antioxidant activity of indica rice seedlings in response to mannitol-induced osmotic stress

Chutipaijit

2016

Chilean J. Agric. Res.

View full text Add to dashboard Cite

Morphological, physiological, and biochemical plant responses were studied in unstressed and stressed seedlings of indica rice (Oryza sativa L.) genotypes. The effect of NB medium supplemented with a 100 mM mannitol treatment, which induced drought stress conditions, was measured for relative growth rate, cell membrane stability, antioxidant enzyme activity (superoxide dismutase [SOD], catalase [CAT], and peroxidase [POD]), and total antioxidant capacity by DPPH (2,2-diphenyl-1-picrylhydrazyl) and ABTS (2,2′-azinobis[3-ethylbenzothiazoline-6-sulfonic acid] diammonium salt) assays. Results of morphological and physiological factors showed two contrasting rice groups, drought-sensitive and drought-tolerant genotypes. After drought stress, the increased rate of SOD activity was lower in drought-tolerant than in drought-sensitive genotypes, but the increased rate of CAT and POD activity and total antioxidant capacity was higher in drought-tolerant than in drought-sensitive genotypes. Increasing changes in activity levels of antioxidant enzymes and total antioxidant capacity indicated more rapid free radical scavenging compared with relative growth and cell membrane stability in drought-tolerant genotypes under shortterm treatment. The trend toward change in CAT and POD antioxidant enzyme activity and total antioxidant capacity of stressed seedlings, as well as the correlation between these changes, and the morphological and physiological responses (0.96 correlation coefficient [R 2 ] between relative growth rate and CAT; 0.93 R 2 between relative growth rate and POD enzyme activity; 0.96 R 2 between relative growth rate and Trolox equivalent antioxidant capacity values) coincided with the degree of drought tolerance.

show abstract

“…According to Junjittakarn et al (2014) the peanut crop extracts 75% of the total N in the fruits while the other 25% is distributed between the leaves and branches. Also according to these authors, the high N extraction for the fruits and the availability of this nutrient favors the yield between the pod and the grains.…”

Section: Peanut Cultivars Submitted To Irrigation Levels and Nitrogenmentioning

confidence: 99%

Peanut Cultivars Submitted to Irrigation Levels and Nitrogen Adubation in Tropical Climate

et al. 2017

View full text Add to dashboard Cite

ABSTRACT:The objective of this study was to define the best irrigation level in a sprinkler system, submitted to nitrogen doses in covering in the municipality of Tangará da Serra -MT, for two cultivars of peanut (Arachis hypogaea L.). The experiment was carried out in the experimental field of the State University of Mato Grosso (UNEMAT), located geographically in latitude 14º39'S; Longitude 57º25'W, at 440 meters of altitude. The climate is classified as tropical humid megathermal (Aw), with annual average rainfall of 1,830 mm and average temperature of the air 24.4ºC. The soil is classified as Dystroferric Red Latosol. The experimental design was in randomized blocks where 4 levels (30, 70, 110 and 150% of the reference evapotranspiration, ET0) were determined. In each level, 0, 30, 60, 90 and 120 Kg ha -1 of nitrogen were applied in two peanut cultivars IAC Tatu ST and IAC Runner 886. Each plot had 24 lines per 12 m length, 4 lines for each dose of N in each level and cultivar with 0.45 m spacing between lines. The irrigation level that provided the highest productivity in the development cycle for both peanut cultivars was 110% of ET0. While the levels of 30 and 70% of the ET0 allowed greater growth in height, but smaller productivities, the 150% ET0 level showed higher yields in the husk, and lower grain yield due to the high germination rate of the grain yet in the plant. For Tatu cultivar, doses of 60 to 90 kg ha -1 of N increase productivity, whereas for Runner cultivar nitrogen fertilization did not affect productivity.

show abstract

Response of root characteristics and yield in peanut under terminal drought condition

Cited by 21 publications

References 21 publications

Crescimento e produtividade de cultivares e linhagens de amendoim submetidas a déficit hídrico

Crescimento e produtividade de cultivares e linhagens de amendoim submetidas a déficit hídrico

Changes in physiological and antioxidant activity of indica rice seedlings in response to mannitol-induced osmotic stress

Peanut Cultivars Submitted to Irrigation Levels and Nitrogen Adubation in Tropical Climate

Contact Info

Product

Resources

About