FIELD T-2 

 Columns 58, 59, 60, and 61 



19 Crop yield, unspecified as to whether it 23 



is in terms of the number, size, or 

 frequency of the units, or total mass 

 of the substance, of the crop. 



191 Number of crop units (number of fruits, 



number of flowers, number of leaves, 

 etc. ). The organ is coded in Field H-1. 



192 Size of crop units (size of fruits, size 231 



of flowers, size of leaves, etc. ). Use 



Symbol 281, rather than Symbol 192, if 



the size is not in terms of a quality of 



a crop but in terms of the unit as an 23 11 



organ or as the organism. 2312 



193 Frequency of bearing of crop units 2313 



(frequency of production of fruit, 2314 



flowers, leaves, or other units) 2315 



194 Total amount of crop yield (when the 



"crop" is produced as a mass of a 25 



substance rather than as units such as 

 in 191, 192, and 193) 



lA Change in flavor or odor of the organism 251 



or of the product of the organism. 252 



(Symbol 7 of Field T-1. ) Use Symbol 26 



lA when the change is qualitative rather 

 than quantitative or when the quanti- 

 tative change is not expressed either 

 as increase or decrease. 



lAl Intensification of flavor or odor (Symbol 261 



7 of Field T-1) 262 



1A2 blminution of flavor or odor (Symbol 7 of 



Field T-1) 



2 Growth and differentiation 



21 Cell division 



211 Mitosis 



2111 Prophase 



2112 Metaphase 27 



2113 Anaphase 



2114 Telophase 



2115 Spindle activity 



212 Meiosis 271 



22 Cell growth; growth and normal form of 



the cell and of its essential structures. 272 



221 Ultimate size of the cell 2721 

 2211 Elongation of the cell. Plant "curvature": 



Symbol 2211 may be used to code 2722 



curvature of plant parts due to elon- 2723 



gation of cells of one side of the plant 2724 



structure (stem, petiole, etc. ). 2725 



222 Shape of the cell 2726 



223 Formation of membranes of the cell 



2231 Thickening of the cell wall 2727 



2232 Sculpturing of the cell wall 



2233 Chemical composition of the cell wall 28 



224 Cytoplasmic volume of the cell 



225 Nuclear size 



226 Nuclear shape 



227 Nuclear number 



228 Nucleolar size 



229 Nucleolar shape 281 

 22A Nucleolar number 2811 



Cell differentiation. Use Symbol 23 for 

 the process of differentiation of certain 

 cell parts. Use Symbol 27 for general 

 differentiation of a cell from a non- 

 specific embryonic type to its mature 

 form (e. g. , differentiation to become a 

 unit of a specific type of tissue). 



Cell inclusion, unspecified. Symbols 

 of the 231- series represent the character 

 of certain cell parts differentiated 

 within the cell during its development. 



Vacuole size 



Vacuole number 



Plastid size 



Plastid number 



Number (or activity) of mitochondria, 

 Golgi bodies, etc. 



Spore germination (including pollen and 

 megaspore "germination"). See Sym- 

 bol AA2 for spore formation. 



Percentage of spore germination 



Length of germ tube 



Seed germination. (Use Symbol 26 only 

 if it can not be determined whether the 

 process affected is in terms of the 

 germinative process or the total gross 

 process ending with emergence. ) 



Seed germination, regardless of emergence 



Emergence of seeds from the soil or 

 other material in which they were 

 planted. Use Symbol 262 for the ac- 

 tivity of germinating seeds in emerging 

 from the soil, as well as for germination 

 expressed in terms of the emerged 

 seedlings. 



Tissue differentiation. For tissue 

 degeneration, use Symbol 418D 

 (histolysis) or a symbol of the atrophy 

 series, 41 1-. 



Tissue formation (organization from 

 embryonic origins) 



Tissue regeneration (e. g. , wound healing) 



Granulation; the formation of granulation 

 tissue 



Organization of regenerative tissue 



Cicatrization 



Fibrosis, the formation of fibrous tissue 



Fibrosis specifically for adhesion 



Replacement fibrosis, specifically 

 replacing fatty tissue 



Replacement fibrosis, tissue replaced 

 unspecified 



Organ formation; organ growth; organ 

 size. Use Symbol 28 only when the 

 data do not clearly indicate whether 

 it is the formation, growth process, 

 or ultimate size of the organ that is 

 affected. 



Organ size; ultimate dimension 



Organ weight 



148 



