The effect of irrigation management and straw mulch on correlation analysis of traits with yield of peanut cultivars

Subject Areas : Crop Production Research

ali abdzadgohari ¹ , alireza pazoki ² , omid sadeghipor ³

1 - دانش آموخته کارشناسی ارشد، گروه زراعت، واحد یادگار امام خمینی )ره( شهرری، دانشگاه آزاد اسلامی، تهران، ایران
2 - گروه زراعت، واحد یادگار امام خمینی )ره( شهرری، دانشگاه آزاد اسلامی، تهران، ایران
3 - گروه زراعت، واحد یادگار امام خمینی )ره( شهرری، دانشگاه آزاد اسلامی، تهران، ایران

Received: 2019-09-01 Accepted : 2020-01-23 Published : 2020-02-29

Keywords: Correlation, Drought stress, Agronomic traits, Guil cultivar,

Abstract :

 Due to analyze the correlation and regression of agronomic traits (grain dimensions)with grain yield of two peanut cultivars under irrigation management conditions (waterrequirement) and plant mulch an experiment was done as factorial split plots based oncompletely randomized blocks design with 3 replications during 2019 in AstanehAshrafieh. The irrigation management in 3 three levels (no irrigation (rainfed), 50 and100% of plant water requirement) as main factor and mulch application in 3 levels (0, 2and 4 cm) and peanut cultivars in two levels (Guil and Gorgani) were considered as subfactor. The results showed that the interaction between irrigation and mulch had thehighest seed yield in 100% of water requirement and 4cm of mulch application (2775 kgha-1). The plant height at 100% of water requirement was 73.8cm which showed 13.7%and 7.7% increase than irrigation conditions and 50% of water requirement respectively.The highest plant height was obtained in 4 cm mulch treatment (75.5cm). In irrigationmanagement, the highest seed length was obtained in 100% water requirement (2.4cm)and 4 cm mulch (2.4cm). The highest seed width was observed in 100% water requirement(1.2 cm), 4 cm mulch application (1.2 cm) and Guil cultivar (1.2cm). Seed yield waspositively and significantly correlated (0.788**) with seed length. It can be concluded thatwith higher seed length, greater seed yield will be observed. Overall, water stressdecreased yield and mulch application reduced the negative effects of water stress on bothGuil and Gorgani cultivars. Guil cultivar showed higher resistance to waterdeficit stresscompared to Gorgani cultivar.