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Components of Variance for Certain Culm Characters of Oats 1
Author(s) -
Jellum M. D.
Publication year - 1962
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1962.0011183x000200030018x
Subject(s) - library science , citation , computer science
FEW studies of lodging resistance in oats have been conducted with microscopic measurement of culm characters. In general, plant breeders have used methods of evaluating strains and varieties for lodging resistance which do not require culm sectioning and microscopic examination. The variability encountered in measuring certain characters of the oat culm has not been reported in the literature. However, the magnitude of variance components should be of primary importance for determining the value and effectiveness of sampling procedures. Garber and Olson (2) used 3 strains of oats and 8 to 25 stems of each for measuring width of culm wall, diameter of culm, and number of vascular bundles. Brady (1) studied 45 stems from each of 3 oat varieties and made 10 measurements per stem for width of culm wall and width of lignified tissue, but variance components were not estimated. Hamilton (3) used 3 stems from each of 4 varieties for measuring certain culm characters. In a later study he used 4 stems from each of 5 varieties (4). All of the foregoing studies were either limited in the number of varieties studied or in the number of stems sampled from each variety. Also, no data were presented for estimates of the components of variince. This paper is a report on the sources of variation encountered in measuring certain culm characters in a study oi lodging resistance in oats. MATERIALS AND METHODS