GRAIN YIELD OF MAIZE VARIETIES OF DIFFERENT MATURITY GROUPS UNDER MARGINAL RAINFALL CONDITIONS
GRAIN YIELD OF MAIZE VARIETIES OF DIFFERENT MATURITY GROUPS UNDER MARGINAL RAINFALL CONDITIONS
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边际降雨条件下不同成熟组玉米品种的籽粒产量
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
B. Badu‐Apraku
中科院分区：
文献类型：
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作者：
A. Oluwaranti;M. Fakorede;B. Badu‐Apraku
在尼日利亚热带雨林生态的边际降雨条件下，对不同熟期玉米品种在不同播期的产量表现进行了评价，并对高产品种进行了鉴定。在2001年和2005年晚季分别对5个和3个不同播期的玉米品种进行了评价。在2002年和2006年早季使用了7个种植日期。所有的种植都以每周一次的间隔进行。获得了关于谷物产量和产量构成的数据。晚季作物产量和产量构成因素随播期的推迟呈下降趋势，而早季作物产量和产量构成因素则呈相反趋势。为了获得所评估的成熟度等级的最佳产量，品种必须在晚季的8月底或9月的第一周左右种植，在早季的4月中旬左右种植。在适播期，TZEE-WSRBCs和ACR 90 POOL 16-DT分别为2001年和2002年的最高产量品种，产量分别为3.8t ha ~（-1）和6.4t ha ~（-1）。2005年晚季以TZECOMP 3DT产量最高（1.7吨/公顷），2006年早季以ACR 95 TZECOMP 4C 3产量最高（4.37吨/公顷）。
This study was conducted to evaluate the yield performance of different maturity groups of maize varieties at different planting dates under the marginal rainfall conditions of the rainforest ecology of Nigeria and identify the high yielding ones. The maize varieties were evaluated on five and three different planting dates in 2001 and 2005 late cropping seasons respectively. Seven planting dates were used in 2002 and 2006 early cropping seasons. All plantings were done at a weekly interval. Data were obtained on grain yield and yield components. Grain yield and yield components decreased as planting was delayed in the late seasons while in the early seasons they showed contrasting trend. To obtain optimum yield for the maturity classes evaluated, the varieties must be planted about the end of August or first week of September for the late season and about the middle of April in the early season. At the optimum planting date TZEE- WSRBCs and ACR 90 POOL16-DT with grain yield of 3.8 tons ha-1 and 6.4 tons ha-1 were the highest yielding varieties in 2001 and 2002 respectively. In 2005 late cropping season, TZECOMP3DT (1.7 tons/ha) was the highest yielding while in 2006 early cropping seasons, ACR 95 TZECOMP4C3 (4.37 tons/ha) was the highest yielding variety.