Abstract Detail

Biotic and abiotic stress

Singh, Sukhdev [1], Kumar, Narendra [2].

Positive influence of silicon solubilizers on growth dyanamics and insect control in different rice genotypes (Oryza sativa L.).

Rice is a crop with enormous potential of feeding two third of the global population .It will also continued as a staple crop for feeding the future generation. It is affected by biotic and abiotic stresses at a large scale. Amongst biotic stresses insects infestation resulted in 10-15 % of the crop losses. To evaluate the potential of silicon soulbilizers on rice crop and insect infestation, a field experiment was conducted at Norman E. Bourlog Crop Research Centre of G.B. Pant University of Agriculture and Technology Pantnagar, India in June 2013.Ten different genotypes of rice were taken for the evaluation. The genotypes were A.K. Dhan, PA-6129, KRH-2, PHB-71, Shanti ,Varadhan,Sampada, PA-6444, PA-6201 and Nagarjuna .The solid and liquid form of silicon soulbilizers were applied through soil application. These treatments were given at 15 days after transplanting and at the time of panicle initiation. Different growth parameters were recorded at tillering, panicle initiation and flowering stages. Yield attributes as number of panicles/plant, spikelets/panicle, number of filled grains/ panicle , number of chaffy grains/panicle, 1000 grain weight, and harvest index (HI) were recorded during reproductive and ripening stages of the crop. Silicon solubilizers acted positively in overall growth and yield attributes in different genotypes of rice. Insect infestation for yellow stem borer Scirpophaga incertulas Walker in terms of white ear head and dead hearts scoring was quiet less with respect to control. Other major insects as leaf folder (Cnaphalocrocis medinalis), brown plant hopper (Nilaparvata lugens Stal) and gall midge (Orseolia oryzae) were also recorded negligible during the study. Further, genomic approaches in this regard will be helpful in understanding the mechanism of defence and enhancing productivity of rice. The authors acknowledge the support of AICRIP Rice (ICAR), New Delhi and DRR, Hyderabad for conducting the above investigation.

1 - GB Pant university of agriculture and technology, Plant physiology, college of basic science and huminities, Pantnagar, UK, 263145, India
2 - GB Pant university of agriculture and technology, Plant physiology, college of basic science and huminities, Plant physiology, Pantnagar, UK, 263145, India

Keywords:
none specified

Presentation Type: Poster:Posters for Topics
Session: P
Location: Hall D/The Shaw Conference Centre
Date: Monday, July 27th, 2015
Time: 5:30 PM
Number: PBA003
Abstract ID:469
Candidate for Awards:None