外遗传平原地区不同氮素水平下玉米（Zea mays）基因型的评估

Q4 Agricultural and Biological Sciences

Indian Journal of Agronomy Pub Date : 2024-02-09 DOI:10.59797/ija.v68i4.5456

SHANTI DEVI BAMBORIYA, SHIVA DHAR, PRAVEEN KUMAR UPADHYAY, ANCHAL DASS, RAJENDRA PRASAD MEENA, KAMAL GARG

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引用次数: 0

摘要

2021 年和 2022 年雨季期间，在新德里 ICAR 印度农业研究所的研究农场进行了一项实验，研究不同基因型和氮素水平对玉米（Zea mays L.）生长和产量的影响。采用两次重复的因子随机完全区组设计，对六种玉米基因型（'AH 4271'、'DKC 9164'、'PJMH 1'、'PMH 13'、'PC 4'和'Pusa Vivek QPM 9'改良型（PV QPM 9-I））和七种氮素水平（0、40、80、120、160、200 和 240 千克氮/公顷）进行了评估。结果表明，与其他基因型相比，"DKC 9164 "的籽粒产量最高，净收益也最高（78.0 和 82.8 × 103 /公顷）。生长参数和产量随着 0 至 240 千克/公顷的施氮量的增加而增加。施氮 240 千克/公顷时，株高、总叶片数、叶面积指数、秸秆和生物产量最高；施氮 200 千克/公顷时，籽粒产量和净收益最高（91.1 和 97.2 × 103 /公顷），与施氮 160 千克/公顷时相当。

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Evaluation of maize (Zea mays) genotypes under different nitrogen levels in a Trans-Gangetic Plains region

An experiment was conducted during rainy (kharif) seasons of 2021 and 2022 at the research farm of ICARIndian Agricultural Research Institute, New Delhi to study the effects of different genotypes and nitrogen levels on growth and yield of maize (Zea mays L.). Six maize genotypes (‘AH 4271’, ‘DKC 9164’, ‘PJMH 1’, ‘PMH 13’, ‘PC 4’ and Pusa Vivek QPM 9’ Improved (PV QPM 9-I) and 7 levels of nitrogen (0, 40, 80, 120, 160, 200 and 240 kg N/ ha) were evaluated using factorial randomized complete block design with two replications. Results showed that among the genotypes the ‘DKC 9164’ produced the highest kernel yield and resulted in maximum net returns (` 78.0 and 82.8 × 103 /ha) as compared to other genotypes. The growth parameters and yield increased with the increasing level of nitrogen from 0 to 240 kg/ha. Application of nitrogen @240 kg N/ha produced the maximum plant height, total number of leaves, leaf area index and stover as well as biological yield, whereas the maximum kernel yield and net returns (` 91.1 & 97.2 × 103 /ha) were obtained with 200 kg N/ha which was at par with 160 kg N/ha

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来源期刊

Indian Journal of Agronomy Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

0.50

自引率

0.00%

发文量

期刊介绍： Indian Journal of Agronomy welcomes concise articles presenting original research data based on field experiments on all aspects of agronomy in different crops and related cropping systems. • The journal publishes only full length comprehensive articles based on new approaches/findings in English only. • Review articles are also considered but these are normally solicited by Editorial Board. However, the authors who wish to contribute a review on their own based on their standing in the relevant field may contact the Secretary or Chief Editor with a broad outline before submitting the manuscript.