scholarly journals Evaluation of Genetic Diversity in Bottle Gourd Germplasm Based on Phenotypic Characters for Yield and Yield Associated Traits

2021 ◽  
pp. 59-63
Author(s):  
Muzeev Ahmad ◽  
Bijendra Singh ◽  
Khursheed Alam ◽  
Satya Prakash ◽  
Archi Gupta ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Genetic Divergence ◽  
Fruit Set ◽  
Fruit Weight ◽  
Bottle Gourd ◽  
Research Centre ◽  
Phenotypic Characters ◽  
Clustering Pattern ◽  
Fruit Harvest ◽  
Fruit Diameter

The experiment was conducted during Kharif season 2018 at Horticulture Research Centre, Sardar Vallabhbhai Patel University of Agriculture & Technology; Modipuram, Meerut (U.P.) assess the genetic diversity among fifteen genotypes of bottle gourd [Lagenaria siceraria (Mol.) Standl.]. The genetic diversity analysis according to that the formation of five clusters suggesting the presence of wide genetic diversity. The clustering pattern showed that geographical diversity wasn't related to genetic diversity. The analysis of % contribution of assorted characters toward the expression of total genetic divergence showed that the Days to 50% flowering (14.48%) followed Days of fruit set (12.95%), Vine length (m) (11.67%), Number of fruits per plant (10.93%), Number of the primary branches (10.37%), Days to first fruit harvest (10.16%), Average fruit weight (g) (9.44%), Fruit diameter (cm) (6.63%) contributed maximum towards total genetic divergence. Based on the maximum genetic distance. It is advisable to attempt a crossing of the genotype from cluster II (GP-7) with the genotype of cluster I (GP-5), cluster IV (GP-2) and cluster III (GP-1), which may cause to the generation of a broad spectrum of favorable genetic variability for yield improvement in bottle gourd.

scholarly journals Genetic divergence analysis in bottle gourd [Lagenaria siceraria (Mol.) Standl.]

2017 ◽  
Vol 9 (4) ◽  
pp. 1949-1953
Author(s):  
C. P. Chetariya ◽  
M. A. Vaddoria
Keyword(s):  
Genetic Diversity ◽  
Genetic Divergence ◽  
Male Flower ◽  
Fruit Weight ◽  
Bottle Gourd ◽  
College Of Agriculture ◽  
Geographic Diversity ◽  
Male Flowers ◽  
Clustering Pattern ◽  
Male To Female

The study was conducted during summer 2014-15 at the Instructional Farm, College of Agriculture, Junagadh Agricultural University, Junagadh to assess the genetic diversity among 50 genotypes of bottle gourd (Ligenaria siceraria L.). The genetic diversity analysis revealed the formation of 13 clusters suggesting the presence of wide genetic diversity. The clustering pattern indicated that geographic diversity was not associated with genetic diversity. The analysis of per cent contribution of various characters towards the expression of total genetic divergence indicated that number of fruits per vine (22.45%) followed by number of primary branches per vine (13.80%), average fruit weight (11.51%), vine length (11.18%), fruit yield per vine (10.61%), number of male flowers (7.84%), fruit length (6.45%), ratio of male to female flowers (4.82%), days to first picking (4.49%) and days to opening of first male flower (3.84%) contributed maximum towards total genetic divergence. Based on the maximum genetic distance. It is advisable to attempt crossing of the genotypes from cluster XII(GP-14) with the genotypes of cluster IV (GP-25) and XI (GP-53), which may lead to the generation of broad spectrum of favourable genetic variability for yield improvement in bottle gourd.

scholarly journals Genetic divergence in commercial cucumber (Cucumis sativus L.) genotypes

2018 ◽  
Vol 44 (2) ◽  
pp. 201-207
Author(s):  
Rokib Hasan ◽  
Mohammed Kamal Hossain ◽  
Nazmul Alam ◽  
Abul Bashar ◽  
Saidul Islam ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Path Analysis ◽  
Genetic Divergence ◽  
Fruit Weight ◽  
Leaf Length ◽  
Cucumis Sativus L ◽  
Cluster Distance ◽  
Effect On Yield ◽  
Positive Direct ◽  
Fruit Diameter

Genetic diversity in commercial cucumber genotypes was estimated based on 13 characters. Path analysis revealed that fruits/plant (0.701) and fruit weight (0.379) had maximum positive direct effect on yield. Seven cucumber genotypes were grouped into three different clusters. The highest inter-cluster distance (4.078) was observed between cluster I and II whereas lowest inter-cluster distance (1.011) was observed between the clusters I and III. Cluster II showed highest mean for length of main vine, nodes/plant, primary branches/plant, days to 1st male flowering, length of internodes/plant, fruits/plant and yield/plant whereas cluster III produced highest mean for leaf length, leaf breadth, fruit length, fruit diameter and fruit weight. Cluster II and III contributed 53.85 and 38.46%, respectively towards divergence.

scholarly journals Studies on Genetic Divergence for Yield and Quality Traits in Cucumber (Cucumis sativus L.)

2020 ◽  
pp. 136-143
Author(s):  
Om Prakash Kumawat ◽  
Udit Kumar ◽  
Satish Kumar Singh ◽  
Sooraj Maurya ◽  
Sooraj Maurya ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Shelf Life ◽  
Genetic Divergence ◽  
Female Flower ◽  
Fruit Weight ◽  
Cucumis Sativus L ◽  
Node Number ◽  
Cluster Distance ◽  
Clustering Pattern ◽  
Number Of Seeds

Genetic divergence analysis, using Mahalanobis D2 statistics, was carried out in twenty one cucumber genotypes including one check for fourteen characters. All the characters under study showed considerable divergence and the genotypes were grouped into four clusters. The clustering pattern had no parallelism between genetic diversity and geographical distribution, suggesting that the selection of parental genotypes for hybridization will be more appropriate based on genetic diversity. Cluster III contained the maximum (5) number of genotypes, whereas remaining all clusters I, II and IV contained similar (4) genotypes. The Intra-cluster distance was maximum (306.685) in cluster III whereas, it was minimum (163.11) in cluster II. Maximum average inter-cluster distance (1439.432) was recorded between cluster IV and cluster V, suggesting the greater chances of getting superior hybrids in F1 or transgressive segregants in subsequent generations. Genotypes in cluster IV were superior in node number of first female flower, days to first flowering, shelf-life, TSS, fruit length, fruit weight and fruit yield per plant. Cluster V had superiority in terms of vine length and number of seeds per fruit. Fruit weight, TSS, number of seeds per fruit, node number of first female flower, shelf-life, days to first harvest and days to first flowering contributed towards genetic divergence.

scholarly journals Assessment of Genetic Diversity in Morphological Traits of Mango Genotypes Using D2 Statistics

2021 ◽  
pp. 31-42
Author(s):  
Swosti S. Das ◽  
K. Kishore ◽  
D. Lenka ◽  
D. K. Dash ◽  
K. C. Samal ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Genetic Divergence ◽  
Morphological Traits ◽  
Fruit Weight ◽  
Tropical Region ◽  
Wide Range ◽  
Cluster Distance ◽  
Breeding Programmes ◽  
Clustering Pattern ◽  
Hybridization Programme

An experiment was conducted during 2018-2020 to study the genetic diversity in 24 morphological traits using D2 statistics in mango genotypes of eastern tropical region of India. Present study reveals that the clustering pattern based on D2 statistics grouped 40 genotypes of mango into 7 clusters, out of which cluster VI (7397.45) shows the highest intracluster value followed by cluster III (5346.99) and cluster V (4130.4), indicating considerable genetic divergence among the accessions of this cluster. While maximum inter- cluster distance was observed between the cluster VI and VII (300180) followed by cluster II and VI (289267.7) and cluster I and VI (214380.5) indicated that the accessions belonging to these groups were genetically most diverse and can be used as a parent in hybridization programme. Wide range of genetic diversity observed among cluster VI and cluster VII, can either be utilized for breeding programmes for genetic improvement in mango or directly adopted as a variety. Fruit yield exhibited significant contribution towards the genetic divergence (60.77%) followed by fruit weight (26.79%), stone percentage (4.74%), peel percentage (2.31%) and pulp percentage (2.05%).

scholarly journals Combinations of Ethephon and Accel for Thinning `Delicious' Apple Trees

2004 ◽  
Vol 129 (2) ◽  
pp. 175-181 ◽  
Author(s):  
Richard P. Marini
Keyword(s):  
Phosphonic Acid ◽  
Fruit Set ◽  
Fruit Weight ◽  
Analysis Of Covariance ◽  
Apple Trees ◽  
Fruit Diameter

For 4 years, `Redchief Delicious' apple [Malus ×sylvestris (L.) Mill. var. domestica (Borkh.) Mansf.] trees were treated with ethephon and/or Accel (6-BA + Gibberellins 4+7) when average fruit diameter was 5.0 to 11.4 mm. Effective thinning was obtained with ethephon at concentrations >500 mg·L-1 and with Accel at concentrations of 100 to 125 mg·L-1. In only 1 year out of 4 did combinations of Accel plus ethephon reduce fruit set more than either material applied alone. Repeat applications of either material alone or in combination reduced fruit set no more than single applications. Fruit weight was negatively related to the number of fruit per tree. After adjusting fruit weight for number of fruit per tree at harvest with analysis of covariance, ethephon did not improve fruit weight at harvest, but Accel improved fruit weight in two of three experiments. The effect of combinations of Accel and ethephon on fruit weight was inconsistent. Chemical names used: 2-chloroethyl phosphonic acid (ethephon); polyothyethylleneploypropanol dihydroxy-propane 2, butoxyethanol (Regulaid); N-(phenylmethyl)-1H-purine-6-amine plus giberrellins A4 + A7 (Accel).

scholarly journals Genetic Divergence in Pointed Gourd

1970 ◽  
pp. 87-92 ◽  
Author(s):  
MY Kabir ◽  
ASMMR Khan ◽  
MS Hassain
Keyword(s):  
Genetic Diversity ◽  
Genetic Divergence ◽  
Agricultural Research ◽  
Growing Season ◽  
Mean Value ◽  
Research Station ◽  
Cluster Distance ◽  
Late Maturity ◽  
Pointed Gourd ◽  
Clustering Pattern

The experiment was conducted at the Regional Agricultural Research Station, Ishurdi, Pabna during the growing season 2005-2006 to estimate the genetic diversity among 24 genotypes of pointed gourd by using Mahalanobis D² statistics for nine characters. The genotypes were grouped in to five clusters. The cluster I and III consisted of highest number of genotypes and it was six. The cluster IV contained the lowest number of genotypes and it was three. The clustering pattern of the genotypes under this study revealed that the genotypes collected from the same location were grouped into different clusters. The genotypes of Kushtia were distributed in different clusters. The inter cluster distance were larger than the intra cluster distance suggesting wider genetic diversity among the genotypes of different groups. The highest intra cluster distance was computed for cluster IV (35.80) and the minimum intra cluster distance was found in cluster III (18.37). The clusters IV and II were more diverse as indicated by maximum inter cluster distances between them (41.56) and the minimum inter cluster divergence was observed between cluster III and II (6.84). Cluster II had the highest cluster mean value for number of fruits per plant (391), weight of fruit per plant (11.72kg) and yield (35.28t/ha). Genotypes of the cluster V had late maturity. Key words: Genotype; genetic diversity; pointed gourd. DOI: 10.3329/jard.v7i1.4426 J Agric Rural Dev 7(1&2), 87-92, June 2009

scholarly journals Phenotypic appearance the yield character of five genotypes of cayenne pepper at Sukamantri, Ciamis

Zuriat ◽  
2018 ◽  
Vol 29 (2) ◽  
pp. 72
Author(s):  
Eva Oktaviani ◽  
Neni Rostini ◽  
Agung Karuniawan
Keyword(s):  
Sea Level ◽  
Block Design ◽  
Fruit Weight ◽  
Potential Yield ◽  
Phenotypic Characters ◽  
Fruit Length ◽  
Randomized Block Design ◽  
Phenotypic Character ◽  
Fruit Diameter ◽  
Yield Character

The purpose of this experiment is to evaluate the phenotypic appearance the yield character of five genotypes of cayenne pepper at Sukamantri, Ciamis region. The experiment used a randomized block design, with five replications. The experiment material consists of five genotypes of cayenne pepper, namely Unpad Ratuni, CR8873, Dewata, Taruna, and Rabani. The experiment was conducted at Sukamantri, Ciamis with altitude of 983 m above sea level (asl.) from August 2017 to February 2018. Data observed included fruit length, fruit diameter, fruit weight per fruit, fruit weight per plant, fruit weight per plot, and fruit weight per hectare. The experiment results show that there are differences in phenotypic characters among the five genotypes tested. Genotypes of the Gods, CR8873, and Ratuni Unpad show the highest potential yield (10.961 ton/ha, 0.345, and 10.232), with fruit weight of fruit per 1.382 gram, 0.911 grams, and 1.311 grams.Keywords: cayenne pepper, phenotypic character, yield

scholarly journals Genetic diversity of yield related traits in a large subset of exotic and indigenous rice germplasm collection maintained at Tamil Nadu Agricultural University gene bank

2021 ◽  
Vol 58 (4) ◽  
pp. 487-495
Author(s):  
K Amudha ◽  
G Ariharasutharsan
Keyword(s):  
Genetic Diversity ◽  
Grain Yield ◽  
Genetic Divergence ◽  
Tamil Nadu ◽  
Geographical Origin ◽  
Germplasm Collection ◽  
Grain Weight ◽  
Rice Germplasm ◽  
Cluster Distance ◽  
Clustering Pattern

The present investigation was carried out to explore the extent of genetic divergence in 95 rice germplasm accessions for twelve characters during kharif, 2018. In D2 analysis, the 95 genotypes were grouped into fifteen clusters. The clustering pattern indicated that there was no parallelism between genetic diversity and geographical origin as the genotypes from same origin were included in different clusters and vice versa. The highest intra cluster distance was registered in cluster V (215.183) followed by cluster IX (209.831), cluster VIII (204.057) and cluster XIV (202.623).The maximum inter cluster distance was observed between cluster II and cluster III (991.049) followed by cluster II and cluster X (974.960), cluster III and cluster XI (963.826), cluster II and XII (962.013), cluster X and cluster XI (932.469) and cluster XI and cluster XII (919.151). Genetically distant parents from those clusters could be able to produce higher heterosis in progenies on hybridization. Grain yield per plant, 100 grain weight and days to 50% flowering were the major contributors towards the total genetic divergence among the genotypes studied. Thus selection could be made based on grain yield per plant, hundred grain weight and days to 50%flowering for the progenies identified.

scholarly journals Pengembangan Kriteria Seleksi untuk Perakitan Terung (Solanum melongena L.) Berdaya Hasil Tinggi

2017 ◽  
Vol 45 (2) ◽  
pp. 182 ◽  
Author(s):  
Faradila Danasworo Putri ◽  
Sobir , ◽  
Muhamad Syukur ◽  
Dan Awang Maharijaya
Keyword(s):  
Genetic Diversity ◽  
Path Analysis ◽  
Solanum Melongena ◽  
Fruit Weight ◽  
Stem Length ◽  
Fruit Length ◽  
Experimental Field ◽  
Correlation And Path Analysis ◽  
Fruit Diameter ◽  
Estimated Heritability

<p>Eggplants (Solanum melongena L.) are consumed worldwide in a variety of colors, shapes and sizes, thus vegetable plant breeders place great interest in developing high yielding genotypes in response to the population growth and the need to increase vegetable production. This research was aimed to determine the proper character as selection character for breeding high yielding eggplants by using estimated heritability value, coefficient of genetic diversity, characters correlation and path analysis. The experiment was conducted during 2014 to August 2015 at Cikabayan Experimental Field, Tajur Experimental Field and Pasir Sarongge Experimental Field, IPB, West Java. A total of 12 characters was observed in the 25 genotypes. Eleven characters has a high estimated heritability value and high coefficient of genetic diversity value. Those characters were time of flowering, time of harvest, fruit length, fruit weight, fruit diameter, plant height, stem length, fruit apical scar length, calyx length, the number of fruits per plant and fruit weight per plant. Results of correlation and path analysis showed that fruit length, fruit weight, fruit diameter, stem diameter, calyx length and number of fruits per plant have a direct positive effect on fruit weight per plant. Fruit weight, fruit diameter and number of fruits per plant are suitable characters in determining the selection criteria for developing high productivity eggplant.<br /><br />Keywords: path analysis, correlation, heritability, genetic diversity coefficient<br /><br /><br /></p>

scholarly journals GENETIC DIVERGENCE IN ASH GOURD (Benincasa hispida Thunb.)

2013 ◽  
Vol 20 (1) ◽  
pp. 19-24 ◽  
Author(s):  
F. Afroze ◽  
M. G. Rasul ◽  
A. K. M. Aminul Islam ◽  
M. A. K. Mian ◽  
T. Hossain
Keyword(s):  
Genetic Diversity ◽  
Genetic Divergence ◽  
Male Flower ◽  
Fruit Weight ◽  
Geographical Isolation ◽  
Benincasa Hispida ◽  
Cluster Distance ◽  
Total Divergence ◽  
Different Origins ◽  
Ash Gourd

Genetic divergence among 46 ash gourd genotypes from different origins was investigated to select the parents for hybridization using Mahalanobis D2 statistics. Though the genotypes grouped into seven clusters, the pattern of distribution of the genotypes into different clusters were random indicating that the geographical isolation was not always related to genetic diversity. Characters like fruit weight, fruits per plant, days to first male flower and nodes for first male flower contributed considerably to the total divergence. Maximum inter-cluster distance between cluster III and IV indicating wide genetic divergence between the genotypes of these two clusters (cluster III and IV followed by cluster IV and VII). However, the intra-cluster distances were smaller than inter-cluster distances. Thus, crossing between the genotypes of these two groups (cluster III and IV) would produce high heterotic progeny and may produce new recombinants with desired traits.DOI: http://dx.doi.org/10.3329/bjpbg.v20i1.17014

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