eprintid: 11449
rev_number: 11
eprint_status: archive
userid: 3170
dir: disk0/00/01/14/49
datestamp: 2020-04-04 05:02:08
lastmod: 2020-04-04 05:02:08
status_changed: 2020-04-04 05:02:08
type: conference_item
metadata_visibility: show
creators_name: Manyasa, E O
creators_name: Tongoona, P
creators_name: Shanahan, P
creators_name: Githiri, S
creators_name: Ojulong, H
creators_name: Rathore, A
icrisatcreators_name: Manyasa, E O
icrisatcreators_name: Ojulong, H
icrisatcreators_name: Rathore, A
affiliation: ICRISAT (Nairobi)
affiliation: University of KwaZulu-Natal, School of Agricultural Earth and Environmental Sciences, Scottsville, Pietermaritzburg, South Africa
affiliation: Jomo Kenyatta University of Agriculture and Technology, (Nairobi)
country: Kenya
country: South Africa
title: Gene action of blast disease reaction and grain yield traits in finger millet
ispublished: pub
subjects: S1.5.2
subjects: s2.13
subjects: s35
divisions: CRPS5
full_text_status: public
pres_type: poster
keywords: Finger Millet, Blast Disease
note: This work was supported by HOPE  project
abstract: Gene action of blast reaction, yield and yield associated  traits in finger millet were studied using a 4x4 North Carolina Design II mating scheme. The four female and four male parents and their 16 crosses were evaluated at Alupe and Kakamega in western Kenya in a randomized complete block design under both artificially induced and natural disease pressure. General combining ability (GCA) and specific combining ability (SCA) estimates of  the traits were calculated to determine the genotypes breeding value. The GCA variance predominated over SCA variance for all traits except finger width hence these traits can be improved through selection. With high, desirable GCA effects, male parent KNE 392 and female parents KNE 744 and IE 11 are suitable for blast resistance breeding while male parent Okhale 1 is suitable for grain yield improvement. The frequency distribution for the segregating F2 generation for the three blast types differed within and between crosses which could be due to differences in gene numbers or gene combinations being expressed in the different parents used.   Convergent crossing or gene pyramiding for durable resistance could be possible.
date: 2019-10
date_type: published
event_title: Africa Plant Breeders Association conference
event_location: Accra, Ghana
event_dates: 23-25 Oct 2019
event_type: conference
refereed: TRUE
citation:   Manyasa, E O and Tongoona, P and Shanahan, P and Githiri, S and Ojulong, H and Rathore, A  (2019) Gene action of blast disease reaction and grain yield traits in finger millet.  In: Africa Plant Breeders Association conference, 23-25 Oct 2019, Accra, Ghana.     
document_url: http://oar.icrisat.org/11449/1/ERIC%20MANYASA%20POSTER%20OCT%202019%20APBA%20conference%20.pdf