Genetic diversity in Indian ash gourd (Benincasa hispida) accessions as revealed by quantitative traits and RAPD markers

2008 ◽  
Vol 118 (1) ◽  
pp. 80-86 ◽  
Author(s):  
Sudhakar Pandey ◽  
Sanjeev Kumar ◽  
Upama Mishra ◽  
Ashutosh Rai ◽  
Major Singh ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Quantitative Traits ◽  
Rapd Markers ◽  
Benincasa Hispida ◽  
Ash Gourd

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

scholarly journals Genetic relatedness of soybean genotypes based on agromorphological traits and RAPD markers

Genetika ◽  
2014 ◽  
Vol 46 (3) ◽  
pp. 839-854 ◽  
Author(s):  
Vesna Peric ◽  
Ana Nikolic ◽  
Vojka Babic ◽  
Aleksanda Sudaric ◽  
Mirjana Srebric ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Quantitative Traits ◽  
Rapd Markers ◽  
Genetic Relatedness ◽  
Diversity Index ◽  
Genetic Relationships ◽  
Morphological Characters ◽  
Morphological Description ◽  
Modern Agriculture ◽  
Soybean Genotypes

Modern agriculture, breeding procedures, as well as competition among breeding institutions contribute to further reduction of already narrowed diversity of soybean commercial varieties. The objective of the study was to characterize eighteen soybean cultivars from three different breeding programs for agro-morphological traits and to reveal genetic diversity using molecular markers. Morphological description was performed with 13 qualitative and 9 quantitative traits. The genetic relationships were estimated using 21 RAPD markers. PIC was calculated for RAPD data, while the diversity of qualitative traits was described by Shannon genetic diversity index. Cluster analysis based on qualitative morphological characters showed clear separation of genotypes on the basis of their plant growth type. PC analysis performed for quantitative traits divided genotypes according to their maturity group. Grouping pattern based on molecular marker data was in agreement with pedigree of cultivars. A great similarity was found, primarily between the varieties under the same institution, and then among all examined varieties. Comparison of three methods in the assessment of diversity indicated that morphological markers might provide useful information in breeding process and allow classification by pedigree to some extent, but RAPD markers were found to be superior in assessing differences among genetically very similar genotypes.

Genetic diversity of ash gourd [Benincasa hispida (Thunb.) Cogn.] inbred lines based on RAPD and ISSR markers and their hybrid performance

2007 ◽  
Vol 113 (3) ◽  
pp. 231-237 ◽  
Author(s):  
Veerendra K. Verma ◽  
T.K. Behera ◽  
A.D. Munshi ◽  
Swarup K. Parida ◽  
T. Mohapatra
Keyword(s):  
Genetic Diversity ◽  
Inbred Lines ◽  
Issr Markers ◽  
Hybrid Performance ◽  
Benincasa Hispida ◽  
Rapd And Issr ◽  
Ash Gourd

scholarly journals Genetic Diversity Analysis of Ash Gourd [Benincasa hispida (Thunb.) Cogn.] Germplasm by Principal Components

2018 ◽  
Vol 7 (03) ◽  
pp. 2187-2195
Author(s):  
Kalyani Pradhan ◽  
Alok Nandi ◽  
Swarnalata Das ◽  
Subrata Sarkar ◽  
Gouri Shankar Sahu ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Principal Components ◽  
Diversity Analysis ◽  
Genetic Diversity Analysis ◽  
Benincasa Hispida ◽  
Ash Gourd

Assessing temporal changes in genetic diversity of maize hybrids using RAPD markers

2007 ◽  
Vol 35 (4) ◽  
pp. 1563-1571 ◽  
Author(s):  
I. Bauer ◽  
S. Mladenovic Drinic ◽  
G. Drinić ◽  
D. Ignjatović Micić
Keyword(s):  
Genetic Diversity ◽  
Rapd Markers ◽  
Temporal Changes ◽  
Maize Hybrids

Study of genetic diversity in wild raspberry (Rubus idaeus L.) germplasm collection using morphological characters and RAPD markers

Biologija ◽  
2008 ◽  
Vol 54 (2) ◽  
pp. 66-74 ◽  
Author(s):  
Jolanta Patamsytė ◽  
Donatas Žvingila ◽  
Juozas Labokas ◽  
Virgilijus Baliuckas ◽  
Laimutė Balčiūnienė ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Rapd Markers ◽  
Germplasm Collection ◽  
Morphological Characters ◽  
Rubus Idaeus

Genetic Diversity of Basil (Ocimum spp. - Lamiaceae) Based on RAPD Markers and Volatile Oil Constituents

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 492f-493
Author(s):  
Roberto F. Vieira ◽  
James E. Simon ◽  
Peter Goldsbrough ◽  
Antonio Figueira
Keyword(s):  
Genetic Diversity ◽  
Molecular Markers ◽  
Rapd Markers ◽  
Volatile Oil ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Traditional Medicines ◽  
The Tropics ◽  
High Degree ◽  
First Time

Essential oils extracted from basil (Ocimum spp.) by steam distillation are used to flavor foods, oral products, in fragrances, and in traditional medicines. The genus Ocimum contains around 30 species native to the tropics and subtropics, with some species naturalized and/or cultivated in temperate areas. Interand intraspecific hybridization have created significant confusion in the botanical systematics of this genus. Taxonomy of basil (O. basilicum) is also complicated by the existence of numerous varieties, cultivars, and chemotypes within the species that do not differ significantly in morphology. In this study we are using RAPD markers and volatile oil composition to characterize the genetic diversity among the most economically important Ocimum species. We hypothesize that the genetic similarity revealed by molecular markers will more accurately reflect the morphological and chemical differences in Ocimum than essential oil composition per se. Preliminary research using five Ocimum species, four undetermined species, and eight varieties of O. basilicum (a total of 19 accessions) generated 107 polymorphic fragments amplified with 19 primers. RAPDs are able to discriminate between Ocimum species, but show a high degree of similarity between O. basilicum varieties. The genetic distance between nine species and among 55 accessions within the species O. americanum, O. basilicum, O. campechianum, O. × citriodorum, O. gratissimum, O. kilimandscharium, O. minimum, O. selloi, and O. tenuiflorum will be analyzed by matrix of similarity and compared to the volatile oil profile. This research will for the first time apply molecular markers to characterize the genetic diversity of Ocimum associate with volatile oil constituent.

Assessment of the Genetic Diversity in Iranian Fennels by RAPD Markers

2013 ◽  
Vol 19 (3) ◽  
pp. 275-285 ◽  
Author(s):  
Kaivan Bahmani ◽  
Ali Izadi Darbandi ◽  
Seyed Ahmad Sadat Noori ◽  
Ali Ashraf Jafari
Keyword(s):  
Genetic Diversity ◽  
Rapd Markers

Genetic diversity of Meloidogyne spp. parasitising potato in Brazil and aggressiveness of M. javanica populations on susceptible cultivars

Nematology ◽  
2017 ◽  
Vol 19 (1) ◽  
pp. 69-80 ◽  
Author(s):  
Israel L. Medina ◽  
Cesar B. Gomes ◽  
Valdir R. Correa ◽  
Vanessa S. Mattos ◽  
Philippe Castagnone-Sereno ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Rapd Markers ◽  
Potato Production ◽  
Potato Cultivars ◽  
Root Knot Nematode ◽  
Root Knot Nematodes ◽  
Nematode Reproduction ◽  
Meloidogyne Spp ◽  
Prevalent Species ◽  
Reproduction Factor

Root-knot nematodes (Meloidogyne spp.) significantly impact potato production worldwide and in Brazil they are considered one of the most important group of nematodes affecting potatoes. The objectives of this study were to survey Meloidogyne spp. associated with potatoes in Brazil, determine their genetic diversity and assess the aggressiveness of M. javanica on two susceptible potato cultivars. Fifty-seven root-knot nematode populations were identified using esterase phenotyping, including Meloidogyne javanica, M. incognita, M. arenaria and M. ethiopica. Overall, root-knot nematodes were present in ca 43% of sampled sites, in which M. javanica was the most prevalent species, and the phenotypes Est J3, J2a and J2 occurred in 91.2, 6.7 and 2.1% of the positive samples, respectively. Other species, such as M. incognita, M. arenaria and M. ethiopica, were found less frequently and occurred at rates of 6.4, 4.3 and 2.1% of the samples, respectively. Sometimes, M. javanica was found in mixtures with other root-knot nematodes in ca 10.6% of sites containing Meloidogyne. After confirming the identification of 17 isolates of M. javanica and one isolate each of M. incognita, M. arenaria and M. ethiopica by SCAR markers, the populations were used to infer their genetic diversity using RAPD markers. Results revealed low intraspecifc genetic diversity among isolates (13.9%) for M. javanica. Similarly, M. javanica sub-populations (J2a) clustered together (81% of bootstrap), indicating subtle variation from typical J3 populations. The aggressiveness of four populations of M. javanica from different Brazilian states on two susceptible potato cultivars was tested under glasshouse conditions. Results indicated differences in aggressiveness among these populations and showed that potato disease was proportional to nematode reproduction factor.

Genetic diversity in Bambara groundnut (Vigna subterranea L.) germplasm revealed by RAPD markers

Genome ◽  
2001 ◽  
Vol 44 (6) ◽  
pp. 995-999 ◽  
Author(s):  
H I Amadou ◽  
P J Bebeli ◽  
P J Kaltsikes
Keyword(s):  
Genetic Diversity ◽  
Cluster Analysis ◽  
Rapd Markers ◽  
Random Amplified Polymorphic Dna ◽  
Geographic Origin ◽  
Bambara Groundnut ◽  
International Institute ◽  
Tropical Agriculture ◽  
Vigna Subterranea ◽  
Ibadan Nigeria

Random amplified polymorphic DNA (RAPD) markers were used to assess genetic diversity in Bambara groundnut (Vigna subterranea L.) germplasm using 25 African accessions from the collection in the International Institute for Tropical Agriculture, Ibadan, Nigeria. Fifty random decamer primers were screened to assess their ability to detect polymorphism in bambara; 17 of them were selected for this study. Considerable genetic diversity was found among the V. subterranea accessions studied. The relationships among the 25 accessions were studied by cluster analysis. The dendrograms showed two main groups of accessions mainly along the lines of their geographic origin. It is concluded that RAPD can be used for germplasm classification in bambara groundnut and hence for improving this crop.Key words: germplasm, PCR, RAPD, Vigna subterranea.

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