Record Details

Morphological Characterization and Selection of Spider Plant (Cleome Gynandra) Accessions from Kenya and South Africa

OAR@ICRISAT

View Archive Info
 
 
Field Value
 
Relation http://oar.icrisat.org/9261/
 
Title Morphological Characterization and Selection of Spider Plant (Cleome Gynandra) Accessions from Kenya and South Africa
 
Creator Wasonga, D O
Ambuko, J L
Chemining’wa, G N
Odeny, D A
Crampton, B G
 
Subject Entomology
 
Description Characterization of selected spider plant accessions from Kenya and South Africa was performed in order
to individuate those with distinct morphological traits for future improvement programs. For this purpose, thirty two
accessions of spider plant, 23 sourced from Kenyan genebank and nine sourced from South African genebank, were
planted at the University of Nairobi’s Kabete field station, in a randomized complete block design with 3
replications. Eleven morphological traits based on modified FAO (1995) spider plant descriptors were used in
characterization. Traits evaluated were growth habit, flower colour, stem colour, stem hairiness, petiole colour,
petiole hairiness, leaf colour, leaf pubescence, leaf shape, leaf blade tip shape, and number of leaflets per leaf. The
scored data were analyzed using DARwin software v6 and Genstat v14. Shannon diversity index (H’), multivariate
methods of principal component analysis and hierarchical clustering analyses of unweighted pair group method of
arithmetic mean were assessed for all the traits. Estimates of Shannon-Weaver diversity index (H’) for the
morphological traits were generally high (H’>0.500). The H' index indicated inter-country diversity to be greater
than the intra-country diversity. Principal component analysis identified seven important morphological traits (stem
colour, stem hairiness, petiole colour, petiole hairiness, leaf hairiness, leaf shape and number of leaflets per leaf) for
characterizing spider plant accessions. The hierarchical cluster analysis revealed two major clusters (Cluster I and II)
for the 32 accessions grown, with clustering of accessions occurring along regional basis. Cluster I consisted of
South African accessions only while cluster II had mainly Kenyan accessions and two South African accessions.
The relatively high levels of dissimilarity revealed in this study among the accessions for traits evaluated, especially
accessions from the two different countries, indicates high prospects for genetic improvement of the crop through
cross breeding by using materials from different geographical origins.
 
Publisher Maxwell Scientific Organization
 
Date 2015
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/9261/1/AJAS_7_4_36-44_2015.pdf
Wasonga, D O and Ambuko, J L and Chemining’wa, G N and Odeny, D A and Crampton, B G (2015) Morphological Characterization and Selection of Spider Plant (Cleome Gynandra) Accessions from Kenya and South Africa. Asian Journal of Agricultural Sciences, 7 (4). pp. 36-44. ISSN 2041-3882