~ 2322 ~ Journal of Pharmacognosy and Phytochemistry 2020; 9(5): 2322-2325 E-ISSN: 2278-4136 P-ISSN: 2349-8234 www.phytojournal.com JPP 2020; 9(5): 2322-2325 Received: 25-06-2020 Accepted: 17-09-2020 Dr. Pratima Gupta Assistant Professor, Department of Horticulture, Fruit Science, Uttar Pradesh, India Vidhur Kumar Assistant Professor, Department of Horticulture, Fruit Science, Uttar Pradesh, India Richa Gupta Student, Department of Entomology, Uttar Pradesh, India Corresponding Author: Dr. Pratima Gupta Assistant Professor, Department of Horticulture, Fruit Science, Uttar Pradesh, India Studies of growth, yield attributes and yield of rabi maize ( Zea mays L.) genotypes Dr. Pratima Gupta, Vidhur Kumar and Richa Gupta Abstract A field experiment was conducted during Rabi season of 2019-20 at College of Agriculture, Teerthanker Mahaveer University (Moradabad) Uttar Pradesh. The experiment comprised of 18 maize genotypes and layout in randomized block design with three replications. Data were recorded on plant height, leaf area, dry matter accumulation, yield attributes and yield per plant. The results showed significant variations in maize genotypes in all the growth and growth indices. Genotype sweet corn-1 (172 cm) produced significantly tallest plant and more number of leaves. Maximum leaf area was found in sweet corn-1 (2790.63 cm 2 ) and lowest in CIMMYT-80 (2050.64 cm 2 ). The highest dry matter accumulation was recorded at harvest stage and was found highest in Sweet corn-1(299.9 g/plant) which was significantly at par with DMR-782 (298.4 g/plant), sweet corn-7 (286.7 g/plant), G 9108 (285.4 g/plant) and pop corn- 1 (281.58 g/plant) and it was lowest in CIMMYT-80 (250.75 g/plant). Maximum number (2.5 cob/plant), more number of grains per cob (208.90 grains/cob) were noted by maize genotype Sweet corn-1 Sweet corn-1 while genotype CIMMYT-80 recorded less number of cob/plant and number of grains per cob. The maximum yield was obtained in sweet corn-1 (52.70 g/plant) followed by DMR-782 (51.90 g/plant) and lowest yield was recorded in CIMMYT-80 (47.40 g/plant). Sweet corn-1 were boldest among genotypes tested while minimum seed weight was recorded in CIMMYT-782. The harvest index of maize genotypes varied from 19.96% in sweet corn-1 to 17.35% in CIMMYT-80. Keywords: Maize, dry matter accumulation, yield, leaf area, rabi Introduction Maize is not only an important human nutrient, but also a basic element of animal feed and raw material for manufacture of many industrial products. Maize crop is utilized in many ways like other grain crops. Over 85 percent of maize produced in the country is consumed as human food. Green cobs are roasted and consumed by people with great interest. The grains special variety called 'popcorn' is characterized by a hard corneous interior structure which is converted into the ‘popped’ form a favorite food for children. The grains, a part from food as bread, pops and gruel are used for many industrial products like manufacture of starch, alcohol, acetic and lactic acids, glucose, paper, rayon, plastic, textile, adhesive, dyes, synthetic rubber, resins artificial leather and boot polish. It is also a feed for cattle. Maize grain contains about 10 percent protein, 4 percent oil, 70 percent carbohydrate, 2-3 percent crude fiber, 10.4 percent albuminoids, 1.4 percent ash. Maize protein ‘zein’ is deficient intryptophaneand lysine, the two essential amino acids. Maize grain has significant quantities of vitamin A, nicotinic acid, riboflavin and vitamin E. Maize is low in calcium, fairly high in phosphorus. Globally, maize is known as queen of cereals because it has the highest genetic yield potential among the cereals. Rabi maize is grown on an area of 1.2 million ha with the grain production of 5.08 million tonnes, with an average productivity of 4.00 t ha -1 (DACNET, 2012). The predominant Rabi maize growing states are Andhra Pradesh (45.5%), Bihar (20.1%), Tamil Nadu (9.3%), Karnataka (8.5%), Maharastra (7.7%), and West Bengal (5.3%). The rabi productivity also increased in the states of Andhra Pradesh, Gujarat, Rajasthan and Maharashtra. On the other hand, the productivity during kharif declined in Andhra Pradesh, Chhattisgarh, Jharkhand, Haryana, Punjab, Gujarat, J&K, Rajasthan and Maharashtra, due to deficient monsoon rains. The acreage of maize and has touched 9.2 million ha and production 24.17 million t, which is the highest so far in the history of maize production in India. The trends in the last three years indicate that area under maize cultivation is expanding not only in rabi but also in kharif season. The major enhancement in the area has occurred during recent past in the peninsular Indian states of Maharashtra and West Bengal (kharif and rabi); Tamil Nadu, Gujarat and Bihar (rabi). The area of maximizing photosynthesis process, achieving efficient translocation of its products to the organ of storage and simultaneously ensuring development of adequate organs