Effect of Plant Growth Inducers on Morpho-physiological Traits of Corn (Zea mays L)

In order to study solvent-dispersing effect of inducing plant growth matters on morpho-physiological traits of double-cross 704 corn, an experiment was conducted under field conditions in complete randomized split blocks plan with 8 replications and 6 treatment of inducing plant growth matters: MARMARIN, HB_101, EXIN (INDOLE acetic acid), CYCOCEL, ETHEPHON, and control case. ANOVA results showed that the traits of stem diameter and height, length and number of panicle twigs, biological yield, and harvest index were significant at least in probability value of 5 percents. MARMARIN and HB_101treatments led to increase in stem length and diameter, biological yield and harvest index, and also, to reduction in number of panicle twigs. EXIN caused increase in stem length, length of panicle, biological yield and harvest index besides reduction of stem diameter and number of panicle twigs. Yet, level of yield increase was lower than the two previous treatments. CYCLOCEL and ETHEPHON resulted in enhancement of stem diameter as well as number of panicle twigs. ETHEPHON reduced biological yield as well as the stem length but did not exhibit a statistically significant difference for harvest index compared to the control treatment. [Ahmad Karimi, Reza Amirnia, Mehdi Tajbakhsh, Ali-Reza Eivazi, Korosh Karimi. Effect of Plant Growth Inducers on Morpho-physiological Traits of Corn (Zea mays L). Life Sci J 2012;9(3):1683-1688]. (ISSN:1097-8135). http://www.lifesciencesite.com. 245