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STUDIES ON PLANT HEIGHT IN AN ASSORTMENT OF VARIETIES OF SINAPIS ALBA BY ANALYZING GENERAL AND SPECIFIC COMBINATIVE CAPACITY

Gabriela Gorinoiu

Abstract

In order to make selection methods more efficient and to make improvement works perfect in developing new mustard cultivars at the Agricultural Research Station in Lovrin, we carried out a series of research and biometrical measurements starting from the necessity of better knowing specific variability, quantitative features, productivity features, the way they are passed on hereditarily, and the intensity of the correlations between them. The main objective of our research was the establishing the general and specific combinatory ability in order to choose the best genitors and to forecast the most valuable hybrid combinations on the ground of the analysis of the first generation.We studied plant size, which compared with the parental forms based on the analysis of the first generation hybrids achieved most values close to their average. [6]The incomplete dominance was associated with the small size of the plants in the F1 generation of hybrids and with the large size in the F2 generation of hybrids. [7] From the point of view of the proportion of dominant or recessive alleles (i.e. positive or negative), parental forms ranged into distinct groups. These differences were due to the action of the environmental factors that made different gene groups detain the main role in the control of the studied features. [1] Thus, we could see that dominance is associated with negative alleles and recessiveness with positive alleles for plant size.

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DOI resolver: doi.org/10.5593/sgem2018/6.2/s25.078

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