Open AccessAGRONOMIC PERFORMANCE OF IMPROVED MAIZE (Zea mays) CULTIVARS IN SOUTHERN CHAD
Author(s) -
Gapili Naoura,
Nadjiam Djirabaye,
Hortense A. Mafouasson,
Mamahat Alhabib Hassane,
Mbaidiro Taambaijim’dJosué,
Christian Yoguernan,
Foncha Felix
Publication year - 2020
Publication title -
journal of experimental biology and agricultural sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.108
H-Index - 2
ISSN - 2320-8694
DOI - 10.18006/2020.8(6).789.798
Subject(s) - cultivar , biology , randomized block design , yield (engineering) , grain yield , zea mays , agronomy , horticulture , materials science , metallurgy
This study was carried out to identify high-performing maize cultivars adapted to the environmental conditions of Southern Chad. Twelve new cultivars associated with two local cultivars often used by farmers in Southern Chad were evaluated in three different environments in a randomized complete block design (RCBD) with three replications. The analysis of variance showed significant differences (p<0.001) between cultivars for the measured traits except for plant height (p=0.157) and ear height (p=0.624). Genotype × environment interaction was also reported significant among cultivars only for days to flowering and number of kernels per row, but yield did not show any statistical difference, although assessed cultivars differed in their relative main performance across the three sites. Potential grain yield showed a negative correlation with days to flowering, ear height, and days to silking. The study revealed different yield performances for the assessed cultivars across different environments. The cultivar 2013 TZEE WPOP DT STR was the highest yield producing cultivars at the combined sites. The cultivars IWD C2 SYN, TZEE WPOP DT C5 STR C5, 2011 TZE YDT STR SYN, and DTE STR YSYN POP C4 showed high-performance cultivars across the different environments and can be therefore recommended for release as new cultivars to farmers of Southern Chad.