EurekaMag.com logo
+ Site Statistics
References:
52,725,316
Abstracts:
28,411,598
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Selection for agronomic characters in hill and row plots of soybeans glycine max


Crop Science 21(4): 591-595
Selection for agronomic characters in hill and row plots of soybeans glycine max
The effectiveness of selection for yield, maturity, height, lodging and phenotypic score among soybean [G. max (L.) Merr.] lines in hill and row plots and in random and nonrandom complete-block desings were compared. Progeny from 50 random S3 plants of Maturity Group II were grown in 2-row, unbordered plots with 69 cm between rows within the plot and 102 cm between plots and in single, unbordered hill plots spaced 102 .times. 102 cm. A randomized complete block design was used for the row plots, and both randomized and nonrandomized complete-block designs were used for the hill plots. There was no difference in the effectiveness of selection for yield between random and nonrandom hills. The hill and row plots were equally effective in selecting the top 2 lines. Actual genetic gain was 2.5 q[quintals]/ha for random hills, 2.8 q/ha for nonrandom hills, and 3.0 q/ha for row plots with a 10% selection intensity. Considering possible differences in the selection differential and number of years per cycle between hill and row plots, the predicted genetic gain per year was 0.6 q/ha for random hills vs. 0.4 q/ha for rows. Selection for maturity, height, lodging and phenotypic score was similar in effectiveness for the 3 plot arrangements. Genotypic correlations of line performance between random and nonrandom hills had coefficients of 0.99-1.02 for the 4 characters. The genotypic correlations between hills and rows ranged 0.80-0.99. Hill plots were as effective as rows for phenotypic selection of agronomically desirable genotypes. Evaluation of yield, maturity, height, lodging or phenotypic score can be done effectively in single, unbordered hill plots. The primary advantages of hills are the reduction in number of years required for cultivar development or recurrent selection by eliminating the need for a generation of seed increase and the larger number of lines that can be tested. Nonrandom hill plots may be useful in cases where randomization prevents efficient discarding of inferior lines before harvest.


Accession: 006380403



Related references

Selection for agronomic characters in hill and row plots of soybeans. Crop Science 21(4): 591-595, 1981

Selection of agronomic traits in hill and row plots of soybeans. Agronomy Abstracts: 55, 1980

Genetic studies of agronomic characters in soybeans (Glycine max (L.) Merr.). Dissertation Abstracts International, B Sciences and Engineering 46(12): 4072B-4073B, 1986

Inheritance and interrelation of some agronomic and chemical characters in an interspecific cross in soybeans, Glycine max x G. ussuriensis. Iowa Agric Expt Sta Res Bull 374: 765-816, 1950

A study of patterns of relationship between seed yield and some agronomic characters in soybeans (Glycine max (L.) Merr.). Forum Sekolah Pasca Sarjana Institut Pertanian Bogor(1), 1979

Simultaneous selection for yield and resistance to brown stem rot of soybean glycine max in hill plots. Crop Science 23(4): 680-682, 1983

Comparison between hill and row plots methods on selection of soybeans for aluminium tolerance in a Brazilian Savannah (Cerrado) acid soil. Pesquisa Agropecuaria Brasileira 33(6): 899-904, 1998

Plots with reduced row size or hill plots in the evaluation of soyabean yields and agronomic characteristics. Boletim de Pesquisa Unidade de Execucao de Pesquisa de Ambito Estadual de Dourados ( 6): 22 pp., 1992

Comparison of inheritance of several agronomic characters between Glycine max X Glycine soja, Glycine max X Glycine gracilis, and Glycine max X Glycine max. Soybean genetics newsletter United States Agricultural Research Service 13(13): 59-61, 1986

Inheritance of some qualitative characters in f 2 generation of a species cross between soybeans glycine max and wild soybeans glycine soja. Journal of the Faculty of Agriculture Iwate University 15(1): 1-10, 1980