Bikash C Sarker*, Pobitra Rani Minjee, Zannata Uma Nisu, Md Jahidul Islam and Md Jafar Ali
Department of Agricultural Chemistry, Faculty of Agriculture, Hajee Mohammad Danesh Science and Technology University, Dinajpur 5200, Bangladesh
*Corresponding author: bikash@hstu.ac.bd
Article history: Received: 07.09.2020, Accepted: 10.12.2020, Published Online: 31.12.2020
Cite this article:
Sarker BC, Minjee PR, Nisu ZU, Islam MJ and Ali MJ. 2020. Morpho-physiological characteristics and yield attributes of three aromatic rice cultivars in response to 6-BAP. Intl. J. Agric. Med. Plants. 1(1):1-9.
ABSTRACT
A field experiment was conducted to study the effect of 6-Benzyl aminopurine (6-BAP) on growth, physiology, yield and yield attributes of three aromatic rice cultivars cv. Chinigura, Kataribhog and Kalijira. The 6-BAP was applied 0, 20, 40, 60 and 80 ppm at vegetative and pre flowering stages. There was a significant variation among the cultivars and different levels of 6-BAP on both vegetative and harvesting stage on tillers hill-1, leaf length, root depth, panicle length, effective and non-effective tillers hill-1, grain yield, harvesting index, chlorophyll-a, chlorophyll-b, total chlorophyll content, and proline content except straw yield and 1000-grain weight. The highest plant height (172.9 cm) was in cv. Chinigura with 60 ppm 6-BAP. The highest panicle length was found in Chinigura with 20 ppm 6-BAP and the lowest was found in Kataribhog with control treatment. The maximum number of grains panicle-1(287) was found in Kataribhog treated with 60 ppm 6-BAP and the minimum number of grains (241.1) in Chinigura under the control. The maximum amount of chlorophyll-a (24.59 mg g-1 FW) was in Chinigura with 60 ppm 6-BAP and the lowest amount (14.87 mg g-1 FW) was recorded in Kataribhog with 20 ppm 6-BAP. The highest amount of total chlorophyll content (25.95 mg g-1 FW) was in Chinigura with 60 ppm 6-BAP while the lowest amount (18.35 mg g-1) was in Kalijira with 80 ppm 6-BAP. The highest proline content (0.353 mg g-1 FW) was recorded in Chinigura with 20 ppm 6-BAP. The Kataribhog produced the highest yield (1.67 t ha-1) treated with 60 ppm 6-BAP. The spraying 60 ppm 6-BAP had the better stimulation on the growth and yield of Kataribhog while 80 ppm for Chinigura. The study infers that 6-BAP enhanced yield of aromatic rice cv. Chinigura which might be an alternative eco-friendly management practices in rice farming business.
Keywords: Aromatic rice, 6-BAP, chlorophyll, foliar spray, growth, yield
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