tomato genotypes
Recently Published Documents


TOTAL DOCUMENTS

370
(FIVE YEARS 118)

H-INDEX

28
(FIVE YEARS 3)

2022 ◽  
Author(s):  
HALIL IBRAHIM OZTURK

Abstract BackroundTurkey is a country with different geographical features and therefore it is extremely diverse in plant diversity. Tomato is one of the most important vegetables produced both in the world and in Turkey. In this study, it was aimed to determine the genetic diversity of 24 tomato genotypes collected from local farmers from “Center villages” and “Üzümlü” district in Erzincan province.Methods and ResultsMorphological (qualitative and quantitative) and molecular markers (ISSR) were used to determine genetic diversity among genotypes. Genotype 24 was found to be higher than other genotypes with important quantitative morphological features such as fruit length, fruit width, fruit weight and soluble solid content (SSC). Considering the overall morphological traits, a wide variation was detected between genotypes. According to the molecular findings obtained. The polymorphism rate ranged from 0–100% and the average polymorphism rate was calculated as 80%.ConclusionPresent findings revealed the diversity in tomato genotypes collected from Erzincan province and may constitute the bases for further breeding studies in tomato and will bring an integrity in tomato identification studies.


Horticulturae ◽  
2022 ◽  
Vol 8 (1) ◽  
pp. 45
Author(s):  
Yang Gao ◽  
Yueping Liang ◽  
Yuanyuan Fu ◽  
Zhuanyun Si ◽  
Abdoul Kader Mounkaila Hamani

Plant physiological responses to various stresses are characterized by interaction and coupling, while the intrinsic mechanism remains unclear. The effects of intraspecific competition on plant growth, stomatal opening, and hormone concentrations were investigated with three tomato genotypes (WT-wild type, Ailsa Craig; FL-a abscisic acid (ABA) deficient mutant, flacca; NR-a partially ethylene-insensitive genotype) under two water regimes (full irrigation, irrigation amount = daily transpiration; deficit irrigation, 60% of irrigation amount in full irrigation) in this study. Three kinds of competitions were designed, i.e., root and canopy competition, non-root competition, and non-canopy competition, respectively. Intraspecific competition reduced plant leaf area and stomatal conductance (gs) of wild-type tomato, accompanied by ABA accumulation and ethylene evolution. Intraspecific competition-induced decrease in gs was absent in FL and NR, indicating ABA and ethylene involved in plant response to intraspecific competition. As soil water becomes dry, the competition decreased gs by elevating ABA and ethylene accumulations. Under severe drought, the competition-induced decline in gs was covered by the severe drought-induced decrease in gs, as hydraulic signals most probably dominate. The absence of canopy competition insignificantly influenced plant stomatal opening of well-watered tomato, as canopy separation minimized the plant neighbor sensing by ethylene and other signals. Whereas under water deficit condition, the absence of canopy competition significantly reduced ABA accumulation in roots and then stomatal conductance, indicating the belowground neighbor detection signals maybe enhanced by soil drought. The absence of root competition increased ethylene evolution, confirming the importance of ethylene in neighbor detection and plant response to environmental stress.


Author(s):  
Abdulhakim A. Aldubai ◽  
Abdullah A. Alsadon ◽  
Khalid A. Al-Gaadi ◽  
ElKamil Tola ◽  
Abdullah A. Ibrahim

Author(s):  
Rakesh Kumar ◽  
Anil Bhushan ◽  
R. K. Samnotra ◽  
Tuhina Dey ◽  
Manmohan Sharma ◽  
...  

Assessment of genetic diversity was made for sixteen yields and yield contributing traits in twenty-one tomato genotypes using D2 statistics. These genotypes were grouped into five clusters by the use of the Tocher method. Cluster I was the most significant, comprising 13 genotypes (Pusa Ruby, CLN2123A1 Red, PKM-1, IIHR-2042, Marglobe, EC 163605, Hawaii 7998, Palam Pink, EC 521038, Punjab Rakthak, EC 163383, Arka Abha and IIVR BT-10) followed by Cluster II  with 5 genotypes (EC 163611, Punjab Sartaj, EC 160885, Punjab Barkha Bahar  and Roma). Other Clusters (II, IV and V) were solitary ones (EC 249515, Kashi Chayan, DVRT-2). Cluster II recorded a maximum intra cluster distance of 3521.73 followed by cluster I (2796.45), whereas, cluster II, IV and V had zero intra cluster distance. The inter cluster D2 value also ranged widely, with a minimum value of 4082.34 between cluster I and IV, indicating a close relationship among the genotypes included. The maximum inter cluster D2 value (23102.20) between cluster II and V indicates high diversity among the genotypes in the clusters. Hence,   maximum contribution towards divergence was observed by average fruit weight (14%) followed by fruit set percentage (12%), number of flowers per cluster (8%), fruit yield per plant (7%), number of fruits per truss (6 %) and total soluble solid content (6 %). Hence, due importance could be given to the selection of genotypes for further improvement based on these traits.


2021 ◽  
pp. 110697
Author(s):  
Marina Alfosea-Simón ◽  
Silvia Simón-Grao ◽  
Ernesto A. Zavala-Gonzalez ◽  
Iván Navarro-Morillo ◽  
Juan J. Martínez-Nicolás ◽  
...  

2021 ◽  
pp. 607-614
Author(s):  
M. Sirkeci ◽  
Y. Tüzel ◽  
G.B. Öztekin ◽  
T. Aşçıoğul ◽  
T. Durdu

Plants ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 2308
Author(s):  
Bojana Živanović ◽  
Sonja Milić Komić ◽  
Nenad Nikolić ◽  
Dragosav Mutavdžić ◽  
Tatjana Srećković ◽  
...  

Two tomato genotypes with constitutively different ABA level, flacca mutant and wild type of Ailsa Craig cv. (WT), were subjected to three repeated drought cycles, with the aim to reveal the role of the abscisic acid (ABA) threshold in developing drought tolerance. Differential responses to drought of two genotypes were obtained: more pronounced stomatal closure, ABA biosynthesis and proline accumulation in WT compared to the mutant were compensated by dry weight accumulation accompanied by transient redox disbalance in flacca. Fourier-transform infrared (FTIR) spectra analysis of isolated cell wall material and morphological parameter measurements on tomato leaves indicated changes in dry weight accumulation and carbon re-allocation to cell wall constituents in flacca, but not in WT. A higher proportion of cellulose, pectin and lignin in isolated cell walls from flacca leaves further increased with repeated drought cycles. Different ABA-dependent stomatal closure between drought cycles implies that acquisition of stomatal sensitivity may be a part of stress memory mechanism developed under given conditions. The regulatory role of ABA in the cell wall restructuring and growth regulation under low leaf potential was discussed with emphasis on the beneficial effects of drought priming in developing differential defense strategies against drought.


2021 ◽  
Author(s):  
Yang Gao ◽  
Yueping Liang ◽  
Shuang Li ◽  
Zhuanyun Si ◽  
Abdoul.Kader.Mounkaila Hamani

Abstract We elucidated the effects of intraspecific competition on plant growth, stomatal opening and hormone concentrations in different tomato genotypes under different water regimes. Intraspecific competition reduced plant leaf area and stomatal conductance (gs) of wild-type tomato (Ailsa Craig), which was accompanied by abscisic acid (ABA) accumulation and ethylene evolution. Intraspecific competition-induced decrease in gs was absent in flacca, an ABA-deficient mutant, and in never-ripe, a partially ethylene-insensitive genotype, indicating ABA and ethylene involved in plant response to intraspecific competition. As soil water becomes dry, the competition decreased gs by elevating ABA and ethylene accumulations. Under severe drought, the competition-induced decline in gs was covered by the severe drought-induced decrease in gs, as hydraulic signals most probably dominate. Absence of canopy competition had no significant influence on plant stomatal opening of well-watered tomato, due to canopy separation minimized the plant neighbor sensing by ethylene and other signals. Whereas under water deficit condition, absence of canopy competition significantly reduced ABA accumulation in roots and then stomatal conductance, indicating the belowground neighbour detection signals maybe enhanced by soil drought. Absence of root competition increased ethylene evolution, confirming the importance of ethylene in neighbor detection and plant response to environmental stress.


Author(s):  
Rahele Ghanbari Moheb Seraj ◽  
Masoud Tohidfar ◽  
Asadollah Ahmadikhah

Identification of the differentially-expressed genes is important for clarification of the complex molecular mechanisms under drought conditions. In this experiment, transcriptome profiles of sensitive and tolerant tomato genotypes under drought stress were analyzed. Three up-regulated genes were selected, included CAB3 (Chlorophyll a-b binding protein3), SAMDC (S-adenosylmethionine decarboxylase proenzyme), and ACS9 (1-aminocyclopropane-1-carboxylate synthase 9). After bioinformatics analysis, tomato genotypes were subjected to drought stress and gene expression was determined using Real-Time-PCR. Physiological parameters of genotypes were also measured by spectrophotometer-based methods. According to the results, these three genes play a key role in stress tolerance. Expression of the CAB3 gene in both sensitive and tolerant genotypes was not significantly different compared to the control, but the SAMDC gene decreased in both genotypes and the ACS9 gene decreased in sensitive genotype and increased in tolerant genotype. The physiological analysis also showed that under stress conditions, the photosynthetic system of the plant was disrupted and the chlorophyll content was reduced, but, proline content and antioxidant enzymes activity increased, in which their quantity in the tolerant genotype was significantly higher than sensitive. Under drought stress, due to damage to the lipid membrane, Malondialdehyde content also increased, in which the sensitive genotype was more affected.


2021 ◽  
Author(s):  
Людмила Анточ ◽  
◽  
Татьяна Салтанович ◽  

The aim of the research was to study the effect of high temperature on the variability of male gametophyte traits in hybrid F5 populations of tomato. Thus, it was found that the high temperature has a significant effect on the variability of the male gametophyte characteristics of tomato hybrids. For the combinations under study, it was revealed that the temperature factor and genotype are the main sources of variability of the male gametophyte traits against the background of elevated temperature. As a result of the experiments, the two most heat-resistant tomato genotypes were identified.


Sign in / Sign up

Export Citation Format

Share Document