DEVELOPMENT AND EVALAUTION OF SYNTHETICS FROM DIFFERENT NUMBER OF MAIZE INBREDS

Y. Baktash, Fadil; I. Hamdan, Mujahid

	DEVELOPMENT AND EVALAUTION OF SYNTHETICS FROM DIFFERENT NUMBER OF MAIZE INBREDS
The Iraqi Journal of Agricultural Science
Article 1, Volume 42, Issue 4, 2011, Pages 1-8
Authors
Fadil Y. Baktash; Mujahid I. Hamdan
Abstract
Field experiments were carried at Abu-Ghraib Agricultural Res. Station during the seasons of 2007 to 2009 to develop and evaluate synthetics produced from different number of maize (Zea mays L.) inbreds. Sixteen inbred maize were grown 2007 to develop six synthetic varieties using polycross method. The synthetic varieties named Syn6 , Syn8 , Syn10 , Syn12 , Syn14 and Syn16 , according to there number of parents. These synthetics were grown during the spring seasons of 2008 and 2009 with cultivars R-106 and 5012 as the check , using randomized complete block design to study several agronomic characters. The results showed significant differences among the synthetic cultivars. Cultivar check 5012 gave the higher plant height, dry matter and harvest index(162cm,14.32ton.h and 30.27%) , respectively, However , cultivar 5012 were better in most important traits as compared with other new varieties especially in leaves area (9352cm) , leaves area index (6.42) and dry matter (21.36t/ha). The check variety R-106 superior to other cultivars in number of days from planting to flowering (70.6days) , maturation (119.94days) and plant height (215.0cm). The synthetic Syn16 superior to other new varieties except Syn14 , in number of days to silting (76.4days) , plant height (184.1cm) , leaves area (6750cm) , leaf area index (4.45) , number of days to maturity dry matter contains (16.32ton/ha) and harvest index. The results revealed that the numbers of inbred line parents influenced until 16Syn inbred line in several agronomic characters. seas

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