Genetical Crossing-over in Zea Mays
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The Analysis of Continuous Variation in a Diallel Cross of Nicotiana Rustica Varieties.
TATISTICAL methods for the analysis of continuous variation have been S developed using second degree statistics such as variance and covariance and successfully applied to crosses between two inbred lines. These have allowed the recognition of the more familiar phenomena associated with Mendelian genetics although they appear in the analyses in a new and less obvious form (MATHER 1949; BATEMAN...
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INTRODUCTION. .. ............................................................... 417 Relative frequency of crossing over in males and females. ............................. 418 Previous investigations. ...................................................... 418 Crossing over between B b and Lg I , and between C c and Sh sh in microsporogenesis and megasporogenesis. .................................
متن کاملPrime Types in Datura.
in regard to aggregate constitution. The several types of recurrent mutants known to involve change of configuration (such as half-mutants and mass-mutants) correspond with these in frequency of origin and in gametic constitution. The fact that the crossing over which yields them is rare is not surprising since crossing over is regularly found to be reduced in structural heterozygotes in Drosop...
متن کاملThe Intensity of Linkage between the Factors for Sugary Endosperm and for Tunicate Ears and the Relative Frequency of Their Crossing over in Microspore and Megaspore Development.
INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 597 Linkage intensity between the factor pairs Su su and Ta tu in maize. .................... 598 The relative frequency of crossing over between S, su and Tu tu in megaspore and microspore development. ...................................................
متن کاملGenetic analysis of Biochemical and Physiological Traits using Haymen’s Graphical Approach in Lines and F2 Progenies of Maize (Zea mays L.)
The diallel mating design is an important tool used by plant breeding programs to obtain information on trait inheritance. Knowledge of gene action, heritability and genetic advance from selection is a prerequisite for starting a breeding program for developing varieties of maize. Five maize S7 lines and their F2 progenies were studied in a 5 × 5 half-diallel crossing design to evaluate the gen...
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تاریخ انتشار 2003