scholarly journals The Effect of Night Low Temperature on Agronomical Traits of Thirty-Nine Pepper Accessions (Capsicum annuum L.)

Agronomy ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1986
Author(s):  
Sherzod Nigmatullayevich Rajametov ◽  
Kwanuk Lee ◽  
Hyo-Bong Jeong ◽  
Myeong-Cheoul Cho ◽  
Chun-Woo Nam ◽  
...  

Pepper plants are subject to complex environmental factors including abiotic and biotic stresses in fields, as well as the significant effects of climate changes, including low and high temperatures. Low temperature stress in the growth and development of pepper plants is one of the most critical issues, and directly impacts the crop yield and productivity of pepper plants. Therefore, it is essential to select and breed low temperature-(LT) tolerant pepper (Capsicum annuum L.) cultivars. This research was conducted to assess the agronomical traits of 39 pepper accessions belonging to the chili and bell fruit varieties which were cultivated under two different night temperature set-points: at 15 °C for a suboptimal temperature (CT) and at 10 °C for a low temperature (LT). The plant heights (PH) of most pepper accessions in a LT were significantly decreased compared to those in a CT. The stem diameter (SD) and the length of main axis (LMA) varied depending on the genotypes under LT. Moreover, the number of flowers (NFL), total number of fruits (NFR), fruit yield (FY), fruit fresh weight (FFW), fruit length (FL), fruit diameter (FD), and number of seeds in a fruit (NSF) remarkably declined in a LT compared to in a CT. The evaluated agronomical traits between LT and CT were further applied for the correlation analysis, principal component analysis (PCA), and hierarchical cluster analysis. Notably, the FY trait was correlated with other reproductive traits including NFR, FFW, FD, and FL on the positive directions and thirty-nine LT-treated pepper accessions were clustered into seven groups by the hierarchical clustering analysis. The selected accessions were primarily involved in the positive trends with the reproductive index including NFR, FL, FD, and FFW traits and could be used for pepper breeding programs to develop LT-tolerant cultivars.

Author(s):  
Sherzod Rajametov ◽  
Kwanuk Lee ◽  
Hyo Bong Jeong ◽  
Myeong Cheoul Cho ◽  
Chun-Woo Nam ◽  
...  

Pepper plants experience complex environmental factors including abiotic and biotic stresses in field and the importance of climate changes including low and high temperatures has been emerged. Low temperature stress in the growth and development is one of the most critical issues, which directly impact on the crop yield and productivity of pepper plants. It is essential to select and breed low temperature-(LT) tolerant pepper (Capsicum annuum L.) cultivars. The research was performed to assess the agronomical traits of 39 pepper accessions belonging to chili and bell fruit types which cultivated two different night temperature set-points at 15°C for suboptimal temperature (CT) and at 10°C for low temperature (LT), respectively. Plant heights (PH) of most pepper accessions in LT were significantly decreased compared to those in CT. The stem diameter (SD) and the length of main axis (LMA) were various depending on the genotypes under LT. Moreover, the number of flowers (NFL), the total number of fruits (NFR), fruit yield (FY), fruit fresh weight (FFW), fruit length (FL), fruit diameter (FD), and the number of seeds in a fruit (NSF) were notably declined in LT compared to CT. The evaluated agronomical traits between LT and CT were further applied for the correlation analysis, the principal component analysis (PCA), and the hierarchical cluster analysis. Notably, FY trait was correlated with other reproductive traits including NFR, FFW, FD, and FL on positive directions and LT treated-39 pepper accessions were clustered into seven groups by the clustering analysis. The selected accessions were primarily involved with the positive trends with the reproductive index including NFR, FL, FD, and FW traits and would be used for pepper breeding programs on developing LT-tolerant cultivars.


2010 ◽  
Vol 126 (2) ◽  
pp. 314
Author(s):  
Reona Azuma ◽  
Naoko Ito ◽  
Nobuhiro Nakayama ◽  
Ryuichi Suwa ◽  
Nguyen Tran Nguyen ◽  
...  

2018 ◽  
Vol 130 ◽  
pp. 50-58 ◽  
Author(s):  
Santos Carballar-Hernández ◽  
Laura Verónica Hernández-Cuevas ◽  
Noé Manuel Montaño ◽  
Ronald Ferrera-Cerrato ◽  
Alejandro Alarcón

Plants ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 1790
Author(s):  
Ginés Otálora ◽  
María Piñero ◽  
Jacinta Collado-González ◽  
Josefa López-Marín ◽  
Francisco del Amor

Growers in the cultivated areas where the climate change threatens the agricultural productivity and livelihoods are aware that the current constraints for good quality water are being worsened by heatwaves. We studied the combination of salinity (60 mM NaCl) and heat shock stress (43 °C) in pepper plants (Capsicum annuum L. var. Tamarin) since this can affect physiological and biochemical processes distinctly when compared to separate effects. Moreover, the exogenous application of 0.5 mM salicylic acid (SA) was studied to determine its impacts and the SA-mediated processes that confer tolerance of the combined or stand-alone stresses. Plant growth, leaf Cl− and NO3− concentrations, carbohydrates, and polyamines were analyzed. Our results show that both salinity stress (SS) and heat stress (HS) reduced plant fresh weight, and SA only increased it for HS, with no effect for the combined stress (CS). While SA increased the concentration of Cl− for SS or CS, it had no effect on NO3−. The carbohydrates concentrations were, in general, increased by HS, and were decreased by CS, and for glucose and fructose, by SA. Additionally, when CS was imposed, SA significantly increased the spermine and spermidine concentrations. Thus, SA did not always alleviate the CS and the plant response to CS cannot be directly attributed to the full or partial sum of the individual responses to each stress.


2016 ◽  
Vol 1 (1) ◽  
pp. 18-28
Author(s):  
Mizan Maulana ◽  
Syafruddin Syafruddin ◽  
Elly Kesumawati

Effect of variety and dosage of mycorrhiza on the growth and yield of pepper plants (Capsicum annuum L.) in Andisol. This study aims to determine the effect of varieties and doses of mycorrhiza on the growth and yield of pepper plants on land Andisol and the interaction between these two factors. This research was conducted at the experimental garden in plant physiology laboratory university agricultural Faculty Syiah Kuala start of June 2015 until December 2015. Research using Random Group 4x3 factorial design with three replications, consisting of 36 experimental units consisting of two factors. he first factor is the dose mycorhiza consists of 4 levels of 0, 5, 10 and 15 g / plant. The second factor varieties consisting of Carlos F1, F1 Kiyo, and La Odeng. The results showed that variety significant effect on yield of pepper plants. The best varieties are varieties Kiyo F1 on the generative phase that can be seen from the weight of the fruit crop age parameter 110 HST and 45 HST mycorhiza infection. While the dose of mycorrhizal significant effect on the growth and yield of pepper plants on land Andisol. Dose best mycorrhiza contained in 10g / plants that can be seen in the number of fruit crops as well as the parameters of mycorhiza infection most. Research also shows there is a higher interaction on Carlos F1 varieties with a dose of 15 g / plant in the parameters the number of leaf age 15 HST, At the age of 30 HST rod diameter also gives the best result in two different varieties, namely in Carlos F1 hybrid varieties and local varieties La Odeng on mycorrhizal dose of 15 g / plant and root infection aged 45 HST. La Odeng varieties give the highest number of mycorrhizal infection in mycorrhizal dose of 10 g / plant.


2010 ◽  
Vol 125 (3) ◽  
pp. 171-178 ◽  
Author(s):  
Reona Azuma ◽  
Naoko Ito ◽  
Nobuhiro Nakayama ◽  
Ryuichi Suwa ◽  
Nguyen Tran Nguyen ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document