scholarly journals Morphological diversity in oleaginous watermelon (Citrullus mucosospermus) from the Nangui Abrogoua University germplasm collection

2016 ◽  
Vol 15 (21) ◽  
pp. 917-929 ◽  
Author(s):  
A Gbotto Ahou ◽  
K Koffi Kouam eacute ◽  
D Fouha Bi Nandy ◽  
T Doubi Bi Serge ◽  
H Tro Hippolyte ◽  
...  
Keyword(s):  
Germplasm Collection ◽  
Morphological Diversity

Habitats, morphological diversity, and distribution of the genus Vigna Savi in Australia

2002 ◽  
Vol 53 (12) ◽  
pp. 1305 ◽  
Author(s):  
R. J. Lawn ◽  
A. R. Watkinson
Keyword(s):  
Cover Crops ◽  
Germplasm Collection ◽  
Morphological Diversity ◽  
Diverse Range ◽  
Important Species ◽  
Provenance Information ◽  
Vigna Species ◽  
Associated Species ◽  
Grassland Habitats ◽  
Genus Vigna

Vigna is an agriculturally important genus containing several important species used as pulses, forages, vegetable, or cover crops. The genus is represented in Australia by 5 species, 4 indigenous (V. radiata, V. vexillata, V. luteola, V. marina) and 1 endemic (V. lanceolata). A germplasm collection has been assembled comprising >400 accessions of the 5 Vigna species from Australia and offshore and seed committed to storage as the CSIRO National Vigna collection. For a large number of accessions, herbarium sheets have also been prepared either from field or glasshouse-grown plants and lodged with the Qld Herbarium, Brisbane. This paper describes the structure of the collection and, for each of the 5 species and major regional variants, summarises provenance information on their geographic distribution, habitat, soil type, and associated species. Within the Australian tropics/subtropics, the Vigna species collectively occupy a diverse range of grassland habitats extending from the foreshore to the central desert. Of the 5 species, the endemic V. lanceolata is the most diverse in terms of distribution, habitat, and morphology. Geographic gaps in the collection are noted and priorities for future collection suggested.

scholarly journals Morphological diversity of current melons (Cucumis melo) compared to a medieval type

2007 ◽  
pp. 84-90
Author(s):  
Lajos Horváth ◽  
Gábor Gyulai ◽  
Zoltán Szabó ◽  
Richárd Lágler ◽  
Zoltán Tóth ◽  
...  
Keyword(s):  
Cucumis Melo ◽  
Genetic Similarity ◽  
Germplasm Collection ◽  
Morphological Diversity ◽  
Fruit Morphology ◽  
Morphological Reconstruction ◽  
Breeding Programs ◽  
15Th Century ◽  
Quantitative And Qualitative Traits ◽  
Insight Into

Morphological diversity of melon (Cucumis melo); phenotype reconstruction of a medieval sample. Morphological diversity among 47 melon (Cucumis melo) cultivars and landraces from Hungarian germplasm collection (ABI, Tápiószele) were analyzed with an ultimate aim to characterize morphologically cv. Hógolyó, which showed the closest genetic similarity to a medieval melon recovered from the 15th century. Cultivars based on fruit morphology were grouped into the three main types of melon as reticulatus, cantalupensis and inodorus. Cluster analysis (by SPSS-11) based on 23 morphological (quantitative and qualitative) traits recorded revealed an extreme diversity among accessions, nevertheless cultivars were clustered into main melon clusters with only two exceptions of inodorus type cv. Zimovka J. and Afghanistan. Cultivars Sweet ananas and Ezüst ananász; and  two Hungarian landraces Kisteleki and Nagycserkeszi showed close similarity. Cultivars Hógolyó and Túrkeve of inodorus typewere also grouped in one cluster, which provide insight into the morphological reconstruction of the medieval melon recovered from the 15th century. These results also indicate that old Hungarian landraces could be re-introduced into breeding programs for broadening genetic base of melon.

scholarly journals Analysis of leaf phenotypic diversity of some Hevea Accessions/clones conserved at the Institute of Agricultural Research for Development (IRAD) Ekona, Cameroon

2021 ◽  
Vol 12 (2) ◽  
pp. 372-378
Author(s):  
Njukeng Jetro Nkengafac ◽  
Ndille Claurence Nkumbe
Keyword(s):  
Agricultural Research ◽  
Phenotypic Diversity ◽  
Germplasm Collection ◽  
Principal Component ◽  
Morphological Diversity ◽  
Morphological Descriptors ◽  
Breeding Programs ◽  
Diverse Groups ◽  
Component Scores

This study was carried out to estimate leaf morphological diversity of some accessions/clones from IRRDB 1981 Hevea germplasm collection conserved at IRAD Ekona, to determine the importance of leaf morphological descriptors in differentiating accessions/clones. A total of 36 clones/ accessions were characterized using 6 leaf morphological descriptors. Analysis of variance showed that there were significant differences in the leaf morphological parameters for the studied clones. The Principal Component Analysis (PCA) showed that all leaf descriptors were informative and contributed significantly to the variation. The first 2 Principal Component scores (PCs) accounted for 88% of the total variation. The cluster analysis based on significant PCs grouped all accessions and clones in to 6 main clusters at the distance of 1.5. This study permits the characterization of Hevea accessions and clones in to diverse groups using leaf morphological descriptors; hence this will be advantageous for production of diverse genotypes during breeding programs to broaden the Hevea gene pool.

scholarly journals Multivariate analysis and clustering reveal high morphological diversity in Tunisian autochthonous grapes (Vitis vinifera): insights into characterization, conservation and commercialization

OENO One ◽  
2014 ◽  
Vol 48 (2) ◽  
pp. 111 ◽  
Author(s):  
Myriam Lamine ◽  
Hassène Zemni ◽  
Sana Ziadi ◽  
Asma Chabaane ◽  
Imen Melki ◽  
...  
Keyword(s):  
Morphological Variation ◽  
Phenotypic Diversity ◽  
Germplasm Collection ◽  
Morphological Differentiation ◽  
Principal Component ◽  
Morphological Diversity ◽  
Hierarchical Cluster ◽  
Table Grapes ◽  
Commercial Cultivation ◽  
First Time

<p style="text-align: justify;"><strong>Aim</strong>: To characterize autochthonous grapevine cultivars from a national germplasm collection, to estimate the phenotypic diversity among and within the cultivars, and to identify the traits that contributed to cultivar heterogeneity.</p><p style="text-align: justify;"><strong>Methods and results</strong>: Seventy major ampelographic descriptors comprising shoot, leaf and fruit traits were investigated to determine the overall degree of polymorphism among 61 autochthonous Tunisian grapevine genotypes. Based on the correlation values obtained between the characters, all descriptors must be considered for the characterization/clustering of the grapes, of which 12 descriptors were identified as the most important. Based on principal component analysis (PCA) and hierarchical cluster analysis (HCA), all cultivars were discriminated and high morphological variation was observed among the accessions. ANOVA demonstrated that most of the morphological variation was found within (89.31 %) rather than between the groups (10.69 %). The Khalt Bouchemma Gabès, Blanc 3 and Blanc 2 genotypes were identified as the barycentres of the groups, representing all the morphological variation observed within autochthonous grapes in Tunisia. These genotypes exhibited all the required characteristics to be introduced into the market and commercialized as table grapes and stand out as the most promising for commercial cultivation.</p><p style="text-align: justify;"><strong>Conclusion</strong>: The detailed ampelographic description presented herein highlighted clear morphological differentiation between Tunisian autochthonous grapevines, investigated for the first time using 70 OIV descriptors, and allowed us for the first time to easily split the Tunisian autochthonous grapevine accessions into wine and table grapes. Numerical analyses showed that the number of morphological traits that are effectively contributing to the characterization of the cultivars could be reduced to 12.</p><p style="text-align: justify;"><strong>Significance and impact of the study</strong>: In this investigation, we highlight the importance of importance of breeding programs, commercialization and evaluation of economically valuable characteristics of the highly diverse autochthonous grapevine cultivars from Tunisia.</p>

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 and Morphological Diversity in Aphis gossypii Glover (Hemiptera: Aphididae) in the Pacific Basin

2019 ◽  
Vol 73 (3) ◽  
pp. 367
Author(s):  
Ross H. Miller ◽  
Robert G. Foottit ◽  
Eric Maw ◽  
Keith S. Pike
Keyword(s):  
Aphis Gossypii ◽  
Morphological Diversity ◽  
Pacific Basin ◽  
The Pacific ◽  
Aphis Gossypii Glover
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