Record Details

Gains in grain yield of extra-early maize during three breeding periods under drought and rain-fed conditions

CGSpace

View Archive Info
 
 
Field Value
 
Title Gains in grain yield of extra-early maize during three breeding periods under drought and rain-fed conditions
 
Creator Badu-Apraku, Baffour
Talabi, A.O.
Ifie, B.E.
Chabi, Y.
Obeng-Antwi, K.
Haruna, A.
Asiedu, Robert
 
Subject maize
drought
food surplus
subsaharan africa
nigeria
 
Description Drought is a key maize (Zea mays L.) production constraint in sub-Saharan Africa. Fourteen, fifteen, and twenty-five extra-early maturing maize cultivars, with varying Striga resistance and drought and low soil N tolerance, were developed from 1995 to 2000 (Period 1), 2001 to 2006 (Period 2), and 2007 to 2012 (Period 3), respectively. The objectives of this study were to examine yield gains in the cultivars and to investigate inter-trait relationships and yield stability under six drought and 17 rainfed conditions in West Africa from 2013 to 2016. Annual rate of yield increase across cultivars was 0.034 (3.28%) and 0.068 Mg ha−1 (2.25%), whereas yield gains per period were 0.17 and 0.38 Mg ha−1 under drought and rainfed environments, respectively. Yield gains under drought and rainfed environments were related to prolonged flowering period, increased plant and ear heights, improved stalk lodging, and ear and plant aspects, whereas delayed leaf senescence and increased number of ears per plant accompanied yield improvement under drought only. Ear aspect and number of ears per plant were primary contributors to yield and could be used as selection criteria for yield enhancement under drought and rainfed conditions. High-yielding and stable cultivars across all environments based on additive main effects and multiplicative interaction (AMMI) biplot included ‘2004 TZEE-Y Pop STR C4’ and ‘TZEE-W Pop STR BC2 C0’ of Period 2 and ‘2009 TZEE-W STR’, ‘TZEE-Y STR 106’, ‘TZEE-W STR 107’, and ‘TZEE-W DT C0 STR C5’ of Period 3. These cultivars could be commercialized to improve food self-sufficiency in sub-Saharan Africa.
 
Date 2018-11
2019-02-15T13:46:30Z
2019-02-15T13:46:30Z
 
Type Journal Article
 
Identifier Badu-Apraku, B., Talabi, A.O., Ifie, B.E., Chabi, Y., Obeng-Antwi, K., Haruna, A. & Asiedu, R. (2018). Gains in grain yield of extra-early maize during three breeding periods under drought and rain-fed conditions. Crop Science, 58(6), 2399-2412.
0011-183X
https://hdl.handle.net/10568/99456
https://doi.org/10.2135/cropsci2018.03.0168
BIOTECH & PLANT BREEDING
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Format 2399-2412
application/pdf
 
Publisher Wiley
 
Source Crop Science