Some correlation studies in maize
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The most common method of selecting seed corn has been for many years to pick the best ears from the crib, no consideration whatever being given to the stalks on which they were borne. Within the last few years, however, this method has been replaced largely by that of selecting the seed from the field, taking into consideration not only the ear, but the plant as well. With this advance in the methods of selecting corn for seed a number of questions naturally arises: Are there any vegetative characters in the plant growth that may serve as indices to the yielding quality of the plant? Which of these seems to be indicative of a high yielding type of plant? Which of a low yielding type? If any such characters be present, to what extent may they be relied upon in making selections? In other words, does a correlation exist between the yielding quality of a plant and any of its vegetative characters? It is in an attempt to find an answer to some of these questions that the following studies are made.