Allelopathic Effect of Selected Rice (Oryza sativa) Varieties against Barnyard Grass (Echinochloa cruss-gulli)

Ferdoushi Rahaman,Mohd Y Rafii,Lutful Hassan,H M Khairul Bashar,Abul Kashem Chowdhury,Abdul Shukor Juraimi,Md Kamal Uddin

doi:10.3390/plants10102017

Abstract

Rice has been subjected to a great deal of stress during its brief existence, but it nevertheless ranked first among cereal crops in terms of demand and productivity. Weeds are characterized as one of the major biotic stresses by many researchers. This research aims to determine the most potential allelopathic rice variety among selected rice accessions. For obtaining preeminent varieties, seventeen rice genotypes were collected from Bangladesh and Malaysia. Two prevalent procedures, relay seeding and the sandwich technique were employed to screen the seventeen rice (donor) accessions against barnyard grass (tested plant). In both approaches, only the BR17 variety demonstrated substantial inhibition of germination percentage, root length, and dry matter of barnyard grass. The rice variety BR17 exclusively took the zenith position, and it inhibited the development of barnyard grass by more than 40–41% on an average. BR17 is originated from KN-1B-361-1-8-6-10 (Indonesia) and developed by the Bangladesh Rice Research Institute (BRRI), Gazipur, Bangladesh in 1985, having a high yielding capacity of more than 6 t/ha. Our study suggested that the usage of the allelopathy-weed inverse relationship to treat the weed problem can be a fantastic choice in the twenty-first century.

Highlights

Rice is one of the most significant irreplaceable staples foods in many countries of the world and its availability is connected to food security [1]
The selected rice varieties (Table 1) were collected from the Bangladesh Rice Research Institute (BRRI, Joydebpur, and Gazipur, Bangladesh), Seed Gene Bank, Universiti Putra Malaysia (UPM), and Malaysian Agricultural Research and Development Institute (MARDI), Malaysia, for the screening purposes (Table 1) and the E. crusgalli seeds were obtained at Ladang 15 UPM, Malaysia
The zenith germination percentage was noticed in the control (100%) and the lowermost was in BR17 (76.16%) and it was going along with Line (16-3-38-9) (80.33%) and BRRI dhan75 (80.83%) (Table 2)

Summary

Introduction

Rice is one of the most significant irreplaceable staples foods in many countries of the world and its availability is connected to food security [1]. Rice is the seed of the monocot plant Oryza sativa (Asian rice) and Oryza glaberrima, which belong to the grass family, Poaceae, and has twenty wild species and two cultivated Oryza sativa (Asian rice) and Oryza glaberrima (African rice) [2]. The growing global population has emphasized increasing food production, rice, which is a staple diet for the majority of the world’s population [3]. Weeds have a tremendous impact on agricultural production and weed losses have exceeded all other agricultural damage instigated by insects, nematodes, disease, rodents, etc [4]. Bangladesh, as well as Malaysia’s self-sufficiency policy, has centered on rice, the country’s primary staple food [5]. Improving the rice yield is always the priority for rice breeding [6]

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