STUDY OF DIFFERENT AMOUNT AND DISTRIBUTION OF FUZZ COVER SEED IN FAMILIES NUCLEOLUS OF GIZA 83 COTTON VARIETY AND THEIR RELATION TO DEPRESS IN YIELD AND QUALITY | ||||
| Journal of Plant Production | ||||
| Article 2, Volume 27, Issue 8, August 2002, Page 5127-5136 PDF (1.35 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2002.256218 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| G. H. Abdel-Zaher, | ||||
| Cotton Research Institute, Agric. Res. Center, Giza, Egypt | ||||
| Abstract | ||||
| The pure selfed seeds of 12 type selected families (were growing in increase B plots in 1999 growing season) were chosen four grades for seed fuzz all 12 families before were massed to form the new nucleolus (Breeder's seed 2000) of Giza 83 colton variety belonging to Gossyp < /em>ium barbadense L. were used in the present investigation were to study the depression in yield and quality. The results indicated that the standard type of seed of Giza 83 (A) was the earliest for families number 6. 8, 11 and 12, but the both types of seed; (B) naked seed-coat complete nakedness and (D) the type complete Fuzziness exhibited the lowest estimates of earliness and lint percentage compared with both the other types of seed for the families number 1 and 5. The results showed significant differences between the families under study and the four types of seed for boll weight, seed index, lint index, seed cotton yieldlfeddan, lint yieldlfeddan, 2.5% S.L. and 50% S.L. fiber length. Type of seed; (D) complete fuzziness exhibited coarser fiber than the other types of seed for families 4 and 5, while, the standard type of seed (A) for families 2 and 9 produced stronger lint. It could be concluded that the existence of the off-type seeds among the true type varieties was dangerous. Therefore, the successive production of pure seeds by the maintenance program, removing the off- type plants out of the general farms and minimizing the period of production and handling the certified seeds by the farmers would be helpful to avoid the occurrence of varietal deterioration. | ||||
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