玉米单交杂交种在两种密度下产量

IF 1.3 4区农林科学 Q3 AGRONOMY

Crop Breeding and Applied Biotechnology Pub Date : 2003-09-30 DOI:10.12702/1984-7033.V03N03A01

L. R. F. Rodrigues, N. D. Silva, É. Mori

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引用次数: 11

摘要

为评价种植密度对玉米幼体产量的影响，进行了两个试验。评价的性状为:21个杂交种、13个自交系和1个商业对照的株高、穗高、穗数/畦、去壳穗重、穗长、穗径。试验采用完全随机区组设计，设3个重复。试验田每行25株和50株，长5 m，间距0.90 m，密度分别为1和2。方差分析表明，除株高和去壳穗重外，密度对其他性状均有显著影响(P<0.05)。杂交种27Ax31B在去壳穗和去壳穗产量密度为5.5万株/ha时表现最佳，在性状相同的情况下，27Ax29B在11万株/ha下表现较好。在两个密度下，杂交种的去壳穗和去壳穗产量都没有超过自交系27A。

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Baby corn single-cross hybrids yield in two plant densities

Two experiments were carried out in order to evaluate the effect of plant density on baby corn yield. The traits evaluated were: plant height, ear height, number of ears/plot, weight, length, and diameter of husked and dehusked ears of 21 hybrids, 13 inbred lines, and one commercial control. The experiments were set up in a randomized complete block design with three replicates. The experimental plots consisted of rows with 25 and 50 plants, 5-m long, 0.90 m apart, in densities 1 and 2, respectively. The analysis of variance showed that plant densities significantly affected all traits (P<0.05), except for plant height and weight of husked ears. The hybrid 27Ax31B had the best performance in the density of 55,000 plants/ha, for husked and dehusked ears yield, while the 27Ax29B hybrid was better under 110,000 plants/ha, taking the same traits into consideration. The hybrids did not overcome the husked and dehusked ears yield of inbred 27A in both plant densities.

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来源期刊

Crop Breeding and Applied Biotechnology AGRONOMY-BIOTECHNOLOGY & APPLIED MICROBIOLOGY

CiteScore

2.70

自引率

13.30%

发文量

审稿时长

6-12 weeks

期刊介绍： The CBAB – CROP BREEDING AND APPLIED BIOTECHNOLOGY (ISSN 1984-7033) – is the official quarterly journal of the Brazilian Society of Plant Breeding, abbreviated CROP BREED APPL BIOTECHNOL. It publishes original scientific articles, which contribute to the scientific and technological development of plant breeding and agriculture. Articles should be to do with basic and applied research on improvement of perennial and annual plants, within the fields of genetics, conservation of germplasm, biotechnology, genomics, cytogenetics, experimental statistics, seeds, food quality, biotic and abiotic stress, and correlated areas. The article must be unpublished. Simultaneous submitting to another periodical is ruled out. Authors are held solely responsible for the opinions and ideas expressed, which do not necessarily reflect the view of the Editorial board. However, the Editorial board reserves the right to suggest or ask for any modifications required. The journal adopts the Ithenticate software for identification of plagiarism. Complete or partial reproduction of articles is permitted, provided the source is cited. All content of the journal, except where identified, is licensed under a Creative Commons attribution-type BY. All articles are published free of charge. This is an open access journal.