Multiline aiming at phenotypic stability and rice blast resistance

Abstract

This study aimed to verify the efficiency of multilines in reducing blast progress and their potential benefits to phenotypic stability in rice. The experiments were conducted in the 2016/17 and 2017/18 agricultural years. A randomized block design was performed with three replications, evaluating 12 lines and a multiline, which consisted of five lines from the Cultivation and Use Value (CUV) test. The multiline presented an estimated grain yield above the average of experiments of around seven bags ha-1 and superior performance in early flowering, justifying the high phenotypic stability for these characters. In this case, the line selection for composing the multiline was favorable and efficient, highlighted by a higher agronomic performance than most lines of the CUV test. The multiline is an adequate strategy to provide higher phenotypic stability and reduce blast progress in the field.

Use of Detached Leaf Inoculation Method for the Early Selection of <em>Coffea arabica </em>L. for Resistance to <em>Hemileia vastatrix </em>Berk & Broome

“…Given this risk, the ideal strategy to mitigate the impacts of a possible loss of resistance is to make use of genetic diversity. Its uses and benefits are documented for different crops [50][51][52], coffee is no exception. Its genetic diversity has yielded a wide spectrum of benefits, including economic, environmental, and social benefits, as has been demonstrated with the varieties released by the National Federation of Coffee Growers and its research center Cenicafé in Colombia [53].…”

Use of Detached Leaf Inoculation Method for the Early Selection of Coffea arabica L. for Resistance to Hemileia vastatrix Berk and Broome

“…Given this risk, the ideal strategy to mitigate the impacts of a possible loss of resistance is to make use of genetic diversity. Its uses and benefits are documented for different crops [46][47][48], and coffee is no exception. Its genetic diversity has yielded a wide spectrum of benefits, including economic, environmental, and social benefits, as has been demonstrated with the varieties released by the National Federation of Coffee Growers and its research center Cenicafé in Colombia [49].…”