QUALITY ASSESSMENT FOR BREEDING EGYPTIAN HIGH QUALITY COTTON VARIETIES
Mar 10, 2017

Breeding & Genetic improvement WCRC Breeding-MedMiddleEast WCRC1
Abstract                                                                         Back to Table of contents

The cotton breeding program in Egypt has developed over a long time.  Strong emphasis has always been put on quality and a good deal of improvement  with  yield potential and agronomic characters.

Methods of quality measurement and  evaluation  of  strains tested in the breeding  program  have  developed  through  three distinct stages: (i) in the  early  days, quality  assessment depended mainly on the graders skilled judgment and later on fiber length and fineness,  (ii)  as  from  1936,  assessment depended on yarn strength supported by fiber length and fineness and (iii) as from the mid 1960s, a  new  system  has been developed that takes into account several important quality parameters including: fiber,  length,  fineness  and   maturity, strength  and  elongation  and  yarn  strength, neppiness  and regularity. The system is based on setting up guide‑line scales for each of the four quality categories of Egyptian cotton.   It is concluded that such  systems  are  helpful  but  it  is  the skilled judgement  of  experienced technologists  that  counts  in giving the breeder the support he needs.

Conclusion

From the extensive experience gained through more than a quarter  century  of  involvement  with  the  Egyptian  cotton  breeding program, it could be concluded that in dealing with high quality ELS and LS cottons, breeding  offers  many  valuable  opportunities  for improvement.  Depending on systems based on  guide‑lines  scales  or other approaches for selection for quality is  undoubtedly  helpful. However, in all cases, what is really needed is the skilled judgment of experienced technologists who can use knowledge and vision of the future requirements of the cotton users to  make the appropriate interpretation of the various  quality  measurements and gives the breeder the effective support he needs.  Breeders  and technologists should work in close collaboration in order to achieve the goals of cotton breeding programs.

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