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II. COTTON 

 A. Varieties, Breeding and Genetics 



Ariz, A Study of the Inheritance of Fiber Qualities in Selfed 



Lines and Hybrids of Upland Cottons * To determine to what ex- 

 tent uniformity in length, strength and fineness of fiber and 

 abundance of fiber, as determined by lint percentage, have a 

 genetic basis. 



PI. Brdg. 47 Coop. ARS 



Ariz. Breeding Cotton for Disease and Insect Resistance and 



for Plant Types Suitable for Mechanical Harvesting . To (l) 

 evaluate resistance of present breeding stocks to local dis- 

 eases & insects & ability for mechanical harvesting, (2) in- 

 troduce stocks from other localities having similar problems, 

 (3) cooperate in production of high yielding varieties of good 

 spinning quality suitable for mechanical harvesting & (4) pro- 

 vide adequate initial seed stocks of desirable strains for dis- 

 tribution to growers. 



PI. Brdg. 278 (S-l) Coop. ARS 



Ariz. Breeding Long ^ Staple Cotton (Gossypium Barbadense) for 



Length* Fineness and Strength of Fiber and Improved Type of 

 Plant with High Production . To produce a long staple cotton 

 with medium fineness of fiber, medium length of fiber, & in- 

 creased strength of fiber with a reduced size of plant with 

 larger bolls & high yield. 



PI. Brdg. 294 Coop. ARS 



Ark. Cotton Genetics: The Inheritance of Boll Size. Lint Per- 



centage, and Other Economic Characters in Cotton . To (1) estab- 

 lish mode of inheritance of economic characters in cotton; and 

 (2) evaluate with respect to genetic linkages and/or environ- 

 mental correlation, the apparent antagonistic association between 

 long fibers and high lint percentage, high strength and high 

 yield, ear lines s and good fiber quality, and other associations 

 of characters that may be found. 

 Agron. 358 (S-l) 



Ark. Cotton Breeding and Genetics: The Development of Cotton 



Varieties Having Good Agronomic Properties and Resistance to 

 Verticillium Wilt . To (l) develop breeding stocks of cotton 

 resistant to Verticillium wilt; (2) determine how resistance 

 factor, when discovered, is inherited and how it can be trans- 

 ferred to varieties of commercial importance; and (3) screen 

 advanced breeding lines developed by the station breeder with 

 respect to Verticillium wilt reactions. 

 Agron., PI. Path. 359 



