Inheritance and genetic diversity of some enzymes in the sexual and diploid pool of the agamic complex of Maximae (Panicum maximum Jacq., P. infestum Anders. and P. trichocladum K.Schum.)

Euphytica ◽  
1993 ◽  
Vol 68 (3) ◽  
pp. 231-239 ◽  
Author(s):  
B. Assienan ◽  
M. Noirot ◽  
Y. Gnagne
Keyword(s):  
Genetic Diversity ◽  
Panicum Maximum ◽  
Agamic Complex

scholarly journals Assessment of genetic diversity in germplasm of Guinea grass (Panicum maximum Jacq.)

2019 ◽  
Author(s):  
P. Ramakrishnan ◽  
C. Babu ◽  
K. Iyanar ◽  
N. Manivannan
Keyword(s):  
Genetic Diversity ◽  
Mean Value ◽  
Yield Potential ◽  
Breeding Programme ◽  
Panicum Maximum ◽  
Yield And Quality ◽  
Cluster Distance ◽  
Green Fodder ◽  
Fodder Yield ◽  
Guinea Grass

In the present study, sixty genotypes of Guinea grass were evaluated for assessing genetic diversity for ten different quantitative characters for exploitation in a breeding programme aimed at improving yield potential of Guinea grass by using Mahalanobis D2 statistics. The genotypes were grouped into ten clusters suggesting the presence of genetic diversity. The cluster I had maximum of 30 genotypes followed by II and III having 15 and 7 genotypes, respectively. These clusters having maximum number of genotypes, reflecting narrow genetic diversity. The inter cluster distances were greater than intra cluster distances, revealing that the selected genotypes were highly divergent. The maximum intra cluster distance was recorded for cluster III (5.63) while clusters IV, V, VI, VII and VIII and X (0.00) were solitary and showed no intra-cluster distance values. The genetically more divergent genotypes present in cluster III and IX as indicated by inter cluster distance value (21.63). Cluster VIII and Cluster V had least number of single genotype and emerged with contained highest cluster mean value for number of tillers/plant, number of leaves/plant, good leaf weight, leaf: stem ratio, green fodder yield/plant and crude protein content. Hence, GGLC 12 genotype in cluster VIII and GGLC 19 in cluster V can be successfully utilized in breeding programme for development of Guinea grass varieties with improved fodder yield and quality.

Identity and genetic diversity of the sorghum ergot pathogen in Australia

2002 ◽  
Vol 53 (6) ◽  
pp. 621 ◽  
Author(s):  
Birte Komolong ◽  
Sukumar Chakraborty ◽  
Malcolm Ryley ◽  
David Yates
Keyword(s):  
Genetic Diversity ◽  
Dna Amplification ◽  
Panicum Maximum ◽  
Its1 Region ◽  
Claviceps Africana ◽  
Animal Toxicity ◽  
Morphological Differences ◽  
High Level ◽  
Species Being ◽  
Cluster 2

Sorghum ergot was first discovered in Australia in 1996. It affects seed production and grain usage in stock feed due to concerns of animal toxicity. Three species of Claviceps are known to cause ergot of sorghum with different epidemiological, animal toxicity, and management implications. Claviceps africana was identified as the causal agent but morphological differences between isolates raised the possibility of more than one species being involved. The major aim of this study was to identify the Claviceps species causing sorghum ergot and to determine the genetic diversity among isolates of the ergot pathogen from Australia and overseas. Symptom development, sequencing of the ITS1 region, and radiolabelled DNA amplification fingerprints (RAF) were used to confirm that ergot of sorghum in Australia is caused by C. africana. The morphology of sphacelia, microconidia, macroconidia, and secondary conidia of all 36 Australian isolates studied matched the description for C. africana and the DNA sequence of the ITS1 region of 2 selected Australian isolates was identical to that of C. africana. Based on RAF analysis of 110 Australian and overseas isolates of Claviceps spp., C. africana isolates could be clearly distinguished (<40% similarity) from C. pusilla, C. sorghicola, C. sorghi, and a Claviceps sp. isolated from Panicum maximum. The C. africana isolates formed 2 distinct clusters. Cluster 1 contained 72 Australian isolates and all 21 overseas isolates of C. africana. The 13 isolates in Cluster 2 were all from Australia and more diverse than those in Cluster 1. The high level of genetic diversity of C. africana isolates in Australia is unexpected given that ergot has only been reported recently. The most likely source of this diversity points to introductions from countries such as India.

scholarly journals Genetic diversity based on morphological data in Panicum maximum hybrids

2012 ◽  
Vol 41 (9) ◽  
pp. 1975-1982 ◽  
Author(s):  
Janaina Azevedo Martuscello ◽  
Thiago Gomes dos Santos Braz ◽  
Liana Jank ◽  
Daniel de Noronha Figueiredo Vieira da Cunha ◽  
Dilermando Miranda da Fonseca
Keyword(s):  
Genetic Diversity ◽  
Morphological Data ◽  
Panicum Maximum

Genetic diversity of Peucedanum japonicum using Internal Transcribed Spacer (ITS) sequence

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
YH Kim ◽  
JA Ryuk ◽  
BS Ko ◽  
JW Lee ◽  
SE Oh ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Internal Transcribed Spacer ◽  
Its Sequence
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