Extension, Cooperative

 

Date of this Version

12-1926

Document Type

Article

Citation

Kiesselbach, T.A. (1926) The immediate effect of gametic relationship and of parental type upon the kernel weight of corn (Research Bulletin: Bulletin of the Agricultural Experiment Station of Nebraska No. 33)

Comments

ISSN 0097-1364

Abstract

This investigation to determine the relation of the kernel weight of corn to the source of pollen with which it was fertilized has been made to answer several questions of both practical and technical interest: (1) To what extent is kernel weight affected in the current crop by the "breadth of breeding" or the gametic relationship? (2) What is the relation of the diversity of parental type to the immediate effect of foreign pollen upon the kernel weight of corn? (3) Is the immediate effect of cross-fertilization upon the kernel weight of sufficient importance to justify the annual mixing of seed corn of two or more varieties in order to increase yield under farm conditions? (4) Is the interpollination between varieties grown in comparative variety yield tests a material source of error by virtue of affecting kernel weight? (5) To what extent is an increased kernel weight, resulting as an immediate effect of cross-fertilization, an indicator of increased productivity for the first generation hybrid progeny over that of the ear-bearing parent grown pure? (6) In the case of increased kernel weight resulting as an immediate effect of cross-fertilization, what is the relative increase of the different parts of the kernel? (7) What is the immediate effect of cross-fertilization upon the maturity of the kernel as expressed by the relative moisture content?

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