scholarly journals Estimate Of Heterosis In Tomato (Solanum Lycopersicum L.)

1970 ◽  
Vol 36 (3) ◽  
pp. 521-527 ◽  
Author(s):  
S Ahmad ◽  
AKM Quamruzzaman ◽  
MR Islam
Keyword(s):  
Genetic Variability ◽  
Solanum Lycopersicum ◽  
Analysis Of Variance ◽  
Winter Season ◽  
Fruit Weight ◽  
Early Flowering ◽  
Experimental Field ◽  
The Cross

A study was conducted to estimate heterosis of 21 tomato cross combinations involving seven parents at the experimental field of Olericulture Division of HRC, BARI during the winter season of 2005-2006. Analysis of variance indicated highly significant differences for all the characters suggesting the presence of genetic variability among the studied materials. Three combinations (P2 × P3, P3 × P4, P3 × P5) showed significant early flowering, while two P1 × P7 (16.67%) and P1 × P2 (12.44%) for individual fruit weight. In the study, the cross combinations P4 × P7 (62.31%), P2 × P6 (37.44%), P4 × P6 (34.77%), P2 × P7 (33.67%), P3 × P7 (32.09%), and P3 × P4 (29.82%) manifested higher heterosis over better parent for yield per plant. Keywords: Heterosis; tomato; genetic variability. DOI: http://dx.doi.org/10.3329/bjar.v36i3.9280 BJAR 2011; 36(3): 521-527

scholarly journals Estimation of heterosis for yield and yield attributing traits in tomato crossed with line and tester method

2019 ◽  
Vol 30 (2) ◽  
pp. 179-185
Author(s):  
S Rehana ◽  
MZ Ullah ◽  
N Zeba ◽  
N Narzis ◽  
A Husna ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Analysis Of Variance ◽  
Block Design ◽  
Winter Season ◽  
Fruit Weight ◽  
Experimental Field ◽  
Significant Difference ◽  
Randomized Complete Block Design ◽  
Tomato Genotypes

This study was conducted to estimate heterosis for the yield and yield contributing traits of 32 cross combinations involving 12 diverse lines of some Bangladeshi tomato genotypes considering line x tester mating fashion at the experimental field of Sher-e-Bangla Agricultural University, Dhaka in 2016-2017 and 2017-2018 winter season. The experiment was designed in a Randomized Complete Block Design (RCBD) with three replications. The analysis of variance (ANOVA) showed highly significant difference for all the characters suggesting the presence of genetic variability among the studied materials. Four cross combinations (L1xT1, L3xT2, L3xT3, L5xT1) showed desirable negative significant heterosis for days to first flowering in both relative heterosis (RH) and heterobeltiosis (HB) ranged from -2.56% to -19.05%, respectively. Highest positive significant heterosis in both RH and HB was observed in four crosses L4xT4 (63.48% and 48.25%), L5xT2 (46.77% and 46.27%), L5xT4 (62.58% and 34.78%) and L8xT3 (37.39% and 35.12%) for individual fruit weight (g), while six crosses L1xT2, L1xT4, L3xT2, L4xT4, L5xT4 and L6xT1 exhibited highest positive significant heterosis for yield per plant (kg) in both HB and RH ranged from 16.09% to 88.46% respectively. Heterotic hybrids with maximum number of studied desirable yield contributing traits (8) of both RH and HB were identified only two crosses L1xT2 and L4xT4. Progressive Agriculture 30 (2): 179-185, 2019

scholarly journals Genetic variability and trait relationship in cherry tomato (Solanum lycopersicum L. var. cerasiforme (Dunnal) A. Gray)

2013 ◽  
Vol 41 (2) ◽  
pp. 163-167 ◽  
Author(s):  
MS Islam ◽  
HC Mohanta ◽  
MR Ismail ◽  
MY Rafii ◽  
MA Malek
Keyword(s):  
Genetic Variability ◽  
Solanum Lycopersicum ◽  
Fruit Weight ◽  
Fruit Yield ◽  
High Yield ◽  
Genetic Advance ◽  
Cherry Tomato ◽  
Solanum Lycopersicum L ◽  
Wide Range ◽  
Additive Gene

Nine traits of 11 cherry tomato (Solanum lycopersicum L.) var. cerasiforme (Dunal) A. Gray) inbred lines exhibited a wide range of genetic variability. High geno- and phenotypic coefficients of variation were obtained for individual fruit weight (68.16 and 74.23%, respectively) followed by number of fruits/plant (58.8 and 68.34%, respectively). High estimates of heritability, genetic advance and genotypic coefficient of variation for the traits of individual fruit weight, number of fruits and clusters/plant were controlled by additive gene action indicating the possibility of selection to improve these characters. Fruit yield/plant showed low heritability along with low genetic advance and did not show significant and positive correlation with the remaining characters. It indicates that improvement of high yield through selection is difficult, rather hybridization can be effective for improving the fruit yield/plant. Among the lines, CH154 produced the highest number of fruits/plant (291) and highest fruit yield (1.89 kg/plant and 63.4 t/ha) and can be selected for cultivation under Bangladesh condition. DOI: http://dx.doi.org/10.3329/bjb.v41i2.13443 Bangladesh J. Bot. 41(2): 163-167, 2012 (December)

scholarly journals Study of Genetic Variability and Heritability in Cherry Tomato (Solanum lycopersicum L. Var. cerasiforme) Genotypes

2021 ◽  
pp. 76-81
Author(s):  
Afroza Akhter ◽  
Ambreen Nabi ◽  
Baseerat Afroza ◽  
Zahoor Ahmad Dar ◽  
Ajaz Ahmad Malik ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Solanum Lycopersicum ◽  
Coefficient Of Variation ◽  
Fruit Weight ◽  
Cherry Tomato ◽  
Total Carotenoids ◽  
Solanum Lycopersicum L ◽  
Wide Range ◽  
Almost All ◽  
Genotypic Coefficient Of Variation

Twenty-nine genotypes of cherry tomato (Solanum lycopersicum L. var. cerasiforme) were evaluated for their genetic variability and heritability. A wide range of genetic variability was observed for twenty traits of cherry tomato genotypes. The analysis of variance was significant for all the characters indicating genetic variability in the genotypes under the study except number of locules per fruit. The highest phenotypic and genotypic coefficient of variation were observed for lycopene (43.12, 42.94), total carotenoids (42.82, 42.51), average fruit weight (42.52, 42.50), fruit yield per hectare (42.29, 42.24). In general Phenotypic Coefficient of Variation (PCV) was marginally higher than the corresponding Genotypic Coefficient of Variation (GCV) indicating the less influence of environment in the expression of traits under study. High heritability coupled with high genetic advance as percentage of mean was observed for almost all characters indicating that most of the traits studied were mainly controlled by additive gene effect and thus selection may be effective.

scholarly journals Keragaman Genetik 19 Genotipe Cabai Rawit Merah (Capsicum frutescens) serta Ketahanannya terhadap Kutu Daun (Aphis gossypii)

2019 ◽  
Vol 46 (3) ◽  
pp. 290-297
Author(s):  
Estriana Riti ◽  
Muhamad Syukur ◽  
Awang Maharijaya ◽  
Dan Purnama Hidayat
Keyword(s):  
Genetic Variability ◽  
Aphis Gossypii ◽  
Fruit Weight ◽  
Seedling Stage ◽  
Resistant Variety ◽  
Capsicum Frutescens ◽  
Aphid Infestation ◽  
Experimental Field ◽  
Anther Length ◽  
Melon Aphid

The information on birds eye chili (Capsicum frutescens L.) resistance to melon aphids (Aphis gossypii) is rarely reported. Objectives of this research were to evaluate genetic variability of 19 genotypes bird chili and identify the potential genotypes resistant to A. gossypii. This research consisted of two experiments. The first experiment was conducted in April-December 2015 at Leuwikopo Experimental Field, Faculty of Agriculture IPB. Genetic materials used were 19 genotypes of bird chili from Plant Breeding Laboratory IPB which were planted from seedling stage until harvesting stage. The second experiment was conducted in May 2017-May 2018 at Faculty of Agriculture, IPB Darmaga Campus. Material used were 19 genotypes of bird chili at seedling stage, and melon aphids which were collected from Leuwikopo Experimental Field IPB. Melon aphid infestation method used no-choice test. The results showed the genetic variability of bird chili had more than 0.30 coefficient of dissimilarity. Genetic variability for canopy width, anther length, fruit weight, and fruit length were classified to broad, but total fruit weight per plant was classified to narrow. There were six genotypes clasified resistant to melon aphid, i.e., C332, C343, C333, C334, C290, C346. The potential genotypes for breeding program of bird chili resistant to melon aphid were C343 and C334.Keywords: Aphis gossypii, Capsicum frutescens, cluster, resistant variety

scholarly journals Assessment of Genetic Divergence in Mutant Lines of Tomato (Solanum lycopersicum L.)

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Sunday Clement Makinde ◽  
Regland Onyemeka
Keyword(s):  
Genetic Variability ◽  
Solanum Lycopersicum ◽  
Sodium Azide ◽  
Genetic Divergence ◽  
Block Design ◽  
Mutation Breeding ◽  
Fruit Weight ◽  
Solanum Lycopersicum L ◽  
Qualitative Characters ◽  
Mutant Lines

Introduction: Mutation breeding is the process of exposing seeds to chemicals or radiation in order to generate mutants with desirable traits. Aim: This study is aimed at assessing the genetic variability among mutant lines of tomato (Solanum lycopersicum L.) generated from a variety of tomato (Roma VF) using two different chemo-mutagens. Materials and Method: The collected seeds were exposed to different concentrations of Sodium azide and Colchicine with varied period of exposure. The seeds were planted and selected 49 positive mutant lines were assessed for morphological genetic variability and yield. 18 mutant lines that produced fruits were tagged and selected. The fruits of the selected mutants were harvested and the seeds (M2 seeds) were subsequently planted for divergence analysis. Ten quantitative characters and twenty qualitative characters were scored using IPGRI standard tomato descriptor. The potted experiment was laid out in the Green House, using Randomized Block Design (RBD) with three replications. Result: The results of this study revealed a high genetic divergence among the mutant lines in both quantitative and qualitative characters. There was significant LSD (0.05) for Germination percentage (7.66), Plant height at maturity (7.05) and Number of leaves at maturity (4.56). The yield (fresh fruit weight) varied significantly, ranging from 10.00g for LeMT29 to 319.70g for LeMT7 respectively. Fruit and plant qualitative characters equally exhibit variation. Conclusion: These observations suggest the existence of genetic variability among the different mutant tomato lines. Further selection and field trials is recommended to identify suitable and desirable lines for possible variety release. To Keywords: Mutant, Tomato, Colchicine, Sodium azide, genetic variability.

scholarly journals RESPON DOSIS PUPUK KANDANG KAMBING TERHADAP PERTUMBUHAN DAN HASIL TANAMAN MENTIMUN (Cucumis sativus L.) VARIETAS HIBRIDA

2018 ◽  
Vol 10 (2) ◽  
pp. 11-29
Author(s):  
Wahyu Wardiana Dewi
Keyword(s):  
Plant Height ◽  
Cucumis Sativus ◽  
Analysis Of Variance ◽  
Fruit Weight ◽  
Growth And Yield ◽  
Leaf Number ◽  
Cucumis Sativus L ◽  
Fruit Length ◽  
Significant Difference ◽  
Goat Manure

This research is aimet to known the responsed of cucumber plant (Cucumis sativus L.), the good means for the growth and yield of cucumber (Cucumis sativus L) of the hybrid varieties doses of good means. This study uses a randomized block design (RAK) with one factor and 5 replications. The main factors, namely: goat manure. First repeat that: without fertilizer (P0), manure goat 10 ton / ha (P1), manure goat 20 ton / ha (P2), manure goat 30 ton / ha (P3), and the latter is manure goat 40 ton / ha (P4). The parameters observed were plant height, leaf number, fruit weight, fruit length and diameter of the fruit. Data analysis by using analysis of variance (ANOVA), if the effect followed by Least Significant Difference Test (BNT). The results based on the analysis of variance showed that: 1) Treatment of manure goat (P) significantly affected the growth and yield of cucumber plants include all the parameters of observation starting plant height, leaf number, fruit weight, fruit length and fruit diameter. Dose goat manure 40 t / ha is the best concentration to produce the highest average values for all parameters. The lowest value of all parameters are shown on the dose P0 (without manure goat / control).

scholarly journals Epistatic gene control on the yield of tomato at medium elevation in the tropical agroecosystem

2019 ◽  
Vol 20 (7) ◽  
Author(s):  
FAJAR PRAKOSO MAWASID ◽  
MUHAMAD SYUKUR ◽  
TRIKOESOEMANINGTYAS TRIKOESOEMANINGTYAS
Keyword(s):  
Flowering Time ◽  
Genetic Model ◽  
Fruit Weight ◽  
Gene Control ◽  
Harvest Time ◽  
Fruit Length ◽  
The Cross ◽  
Tropical Agroecosystem ◽  
Duplicate Epistasis ◽  
Fruit Diameter

Abstract. Mawasid FP, Syukur M, Trikoesoemaningtyas. 2019. Epistatic gene control on the yield of tomato at medium elevation in the tropical agroecosystem. Biodiversitas 20: 1880-1886. Cultivation of tomatoes on the middle-low plain generally decreases the quantity and quality of the yield due to high-temperature stress. Increasing the size and weight of lowland tomatoes is needed to enhance national production. Information on the action and genetic model of target characters is needed in the preparation of the assembly program, especially for selection needs. This study aims to obtain genetic information and heritability of tomato yield characters, as a basis for assembling large tomato varieties for the lowlands. The study was conducted using six populations (P1, P2, F1, BCP1, BCP2, and F2) resulting from two different crosses of 99D x Tora (C-I) and 97D x Tora (C-II). The results show that the action of non-additive genes and non-allelic interactions has a large value, with duplicate epistasis being more dominant than complementary epistasis. Duplicate epistasis was found in the character of harvest time, fruit length, fruit diameter, fruit weight in cross I and flowering time, harvest time, fruit length, fruit diameter, and number of fruits in cross II, while complementary epistasis was found in flowering time, fruit weight per plant, number of fruits in cross I, and fruit weight, fruit weight per plant in cross II. Moderate to high heritability was found in the character of fruit length, fruit diameter, fruit weight, and fruit weight per plant. The values are higher in population from the cross I (99D x Tora) for each character, indicating that the cross I has a higher potential for genetic progress than cross II. Selection is recommended when the homozygosity has increased, using the Bulk method or Single Seed Decent. The two methods above can maintain variability in the next generation, so epistasis genes that control target characters are not drastically eliminated.

scholarly journals Influence of vineyard peach selections on vigour and initial yield in peach and nectarine

Genetika ◽  
2013 ◽  
Vol 45 (1) ◽  
pp. 11-20 ◽  
Author(s):  
Gordan Zec ◽  
Milica Fotiric-Aksic ◽  
Slavica Colic ◽  
Todor Vulic ◽  
Dragan Nikolic ◽  
...  
Keyword(s):  
Principal Component Analysis ◽  
Analysis Of Variance ◽  
Geographic Origin ◽  
Principal Component ◽  
Fruit Trees ◽  
Fruit Production ◽  
Fruit Weight ◽  
Open Pollination ◽  
Fruit Productivity ◽  
F1 Generation

Seedlings (progenies) of eight selected vineyard peach genotypes obtained by self and open pollination were examined in this study during three consecutive years. Two progenies from unselected vineyard peach genotypes with different geographic origin were used as a standard. Peach cv. Autumn Glo and nectarine cv. Stark Red Gold were grafted on F1 generation of eight vineyard peach selections and two standard progenies. Analysis of variance indicated statistically significant differences in vigour and fruit productivity between fruit trees grafted on different progenies of vineyard peach selections. A high correlation was found between rootstock vigour and fruit production of grafted cultivars. In addition, the principal component analysis made it possible to establish similar groups of rootstocks, depending on its influence to vigour, productivity and indexes of efficiency of grafted peach and nectarine cultivar. The most promising rootstocks for those two cultivars were PSK and 7S because grafted AG and SRG have high fruit weight, initial yields and very satisfactory rootstock, scion and canopy efficiency.

scholarly journals Effects of Salt Stress on Fruit Antioxidant Capacity of Wild (Solanum chilense) and Domesticated (Solanum lycopersicum var. cerasiforme) Tomatoes

Agronomy ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1481
Author(s):  
Juan Pablo Martínez ◽  
Raúl Fuentes ◽  
Karen Farías ◽  
Carolina Lizana ◽  
Juan Felipe Alfaro ◽  
...  
Keyword(s):  
Salt Stress ◽  
Antioxidant Capacity ◽  
Solanum Lycopersicum ◽  
Fruit Weight ◽  
Interspecific Crosses ◽  
Antioxidant Power ◽  
Tomato Species ◽  
In The Wild ◽  
Solanum Chilense ◽  
The Impact

The effects of salt on the quality of fruits were investigated in order to compare the impact of salt on key fruit properties of the cultivated domesticated tomato species (Solanum lycopersicum) and its wild halophyte relative Solanum chilense. To this end, cherry tomato plants (S. lycopersicum var. cerasiforme) and from accession LA4107 (S. chilense) were maintained for 112 days in the absence or presence of NaCl (40 and 80 mM) in nutrient solution. Among others, salinity decreased fruit weight and increased total soluble solid (TSS) in S. lycopersicum but not in S. chilense. The fruit antioxidant capacity estimated by ferric reducing antioxidant power (FRAP) analysis was higher in S. chilense than in S. lycopersicum and increased in the former while it decreased in the latter in response to NaCl. Salinity increased the lycopene (LYC) content but decreased ß-carotene (b-CAR) concentration in the fruits of S. lycopersicum, while these compounds were not detected in the wild halophyte S. chilense. The oxidative status of salt-treated fruits was more tightly regulated in S. chilense than in S. lycopersicum. The two considered species, however, possess complementary properties and interspecific crosses may therefore be considered as a promising option for the improvement of salt-stress resistance in tomatoes.

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