The effect of examining the correlation of traits and decomposition into main components, cycocel and micronutrients, on the model of stress indicators, physiological traits, oxidant enzymes, yield and yield components of corn (Zea mays cv. Sc 704) u

Subject Areas : Optimizing the use of fertilizers and poisons

Seyed nouradin Ghaffari khalaf Mohammadi ¹ , Alireza Shokufar ² , Mani Mojaddam ³ , Shahram Lak ⁴ , aziz afarinesh ⁵

1 - Department of Agronomy, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
2 - Department of Agronomy, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.
3 - Department of Agronomy, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.
4 - Department of Agronomy, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran,
5 - Assistant Professor,, Faculty member of Safiabad Agricultural Research Center, Dezful,, Dezful, Iran.

Received: 2023-11-30 Accepted : 2024-03-19 Published : 2024-03-19

Keywords: Significant positive, Growth retarder, Correlation, Increasing tolerance to stress, Decomposition into main components,

Abstract :

This study was carried out in the two crop years of 2016 and 2017 at Safi Abad Research Center. The experiment was conducted as a factorial split plot in the form of a randomized complete block design with four replications. The main factor of the experiment was to cut off irrigation at three levels (control), cut off irrigation at the stage Silking and cut off irrigation at the stage Blister and the secondary factor wascycocel zero, 442.5 and 885 mg/l Micronutrients were zero, 1000 and 1500 gr/ha and control. The correlation results of the assessed traits with each other were determined, seed yield with plant height, number of seeds per cob, thousand seed weight had a significant positive correlation with hydrogen peroxidase, malondialdehyde, electrolyte leakage rate, catalase activity, peroxidase, superoxide dismutase and proline in leaves showed a significant negative correlation, the highest positive correlation was related to the number of seeds in the cob (0.893) and the highest negative correlation was from electrolyte leakage (-0.945) and hydrogen peroxide. (-0.854) was observed. The placement process of different amounts of micronutrients and cycocel was determined; So that different levels of micronutrients tend to be more towards the center; And consumption of 1000 gr/ha tends to zone III and the zone where yield and yield components are located. In general, it was found that foliar spraying with concentrations of 1500 gr/ha of micronutrients and 885 mg/l of cycocel by reducing the negative effects of stress, could be suitable treatments to increase tolerance toin corn stress at the end of the season.