Comparison of Methods of Pollen Selection for Heat Tolerance and Their Effect in Segregating Population of Maize (Zea mays)

Author(s):  
Ashutosh Singh ◽  
R. L. Ravikumar ◽  
Suresh H. Antre
Crop Science ◽  
1988 ◽  
Vol 28 (5) ◽  
pp. 857-859 ◽  
Author(s):  
Benjamin Rodriguez‐Garay ◽  
Jerry R. Barrow

2020 ◽  
Vol 24 (1) ◽  
pp. 1-13
Author(s):  
István Nagy ◽  
György Kövér ◽  
Zsolt Gerencsér ◽  
Gabriella Szász

Authors summarized the results of the last three decades’ relevant literature examining the temperature effects on the various growth, reproductive and carcass traits in pigs. The ideal period of temperature measurement and the different methodologies characterizing temperature effects were summarized. The aspects of genotype environment interaction for the measured traits under hot and temperate conditions were also presented. Finally the possibilities of direct genetic selection for heat tolerance and its possible selection criteria traits were also discussed.


1999 ◽  
Vol 124 (6) ◽  
pp. 641-643
Author(s):  
Bruce G. Abedon ◽  
William F. Tracy

Research was conducted to evaluate correlated effects of full-sib phenotypic recurrent selection for resistance to common rust (Puccinia sorghi Schw.) on ear quality traits in three sugary1 (su1) sweet corn (Zea mays L.) populations: Minn11, Minn14, and NECDR. Cycles 0, 1, 2, and 3 of each population were evaluated in both rust infested and nonrust infested environments. Generally, selection for rust resistance resulted in significant, but minor, decreases in ear and kernel size. Changes in specific traits varied with population. The nonsignificant cycle × environment interaction indicates similar responses occurred in all environments evaluated. Based on these results, selection for ear quality traits need not accompany selection for resistance to common rust if maintenance of ear quality is desired.


2015 ◽  
Vol 15 (4) ◽  
pp. 210-217 ◽  
Author(s):  
Izabel Cristina Rodrigues de Figueiredo ◽  
César Augusto Brasil Pereira Pinto ◽  
Guilherme Henrique Martins Rodrigues Ribeiro ◽  
Leandro de Oliveira Lino ◽  
Danilo Hottis Lyra ◽  
...  

Abstract The aim of this study was to evaluate the efficiency of selection of potato families in early generations for heat tolerance. Thirty families were evaluated in the seedling generation (SG), first clonal generation (FCG) in the field and greenhouse under high temperature conditions, and second clonal generation (SCG) under mild temperatures. The mean of the families was obtained in each generation. The 16 most productive families in FCG were selected, and the clones of these families were evaluated in experiments in the winter and rainy crop seasons. The results showed that family selection for tuber shape may be applied as of the SG. It was also observed that family selection in the FCG and SCG for yield and tuber specific gravity contributed to identification of clones tolerant to heat and responsive to environmental improvement.


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