428 SEMI-CENTENNIAL OF TORREY BOTANICAL CLUB 
TABLE 46 
VALUES FOR TWELVE Fi HYBRIDS OF A CROSS BETWEEN A PLANT OF THE RED- 
LEAVED TREVISO AND A WILD PLANT (A) 
Pedigree te] | [d | г | rej a | 5 | i 
| 
ката F DO 19... í 15.21 48 | — 21.58 101.00 16.6 | — 0.030 9I 
MEME ГЫ CL ys 17.01 48 | — 15.05 740.21 |:18.0 | — 0.020 | ОГ 
RN NIU an aan 7.0 47 | — 23-75 781.8; | 18.4 | — 0.029 | 94 
uar RCM QE 17.5| 52 | — 17.89 932.42 | 18.5 | — 0.019 | 97 
КИТӘ чы ЭИ m 16.6 1534.10 690.03 | 18.8 | — 0.048 | 90 
ыр fuis жди ни 17.71 42 | — 22.87 611.89 | 19.2 — 0.036 | 83 
TUTO QU UT ї8.т| 52 25.35 936.72 | 19.3 | — 0.027 | 99 
nicer ОЗИНЕ I7.4| 48 | — 34.19 856.32 | 19.3 | — 0.040 | 97 
dee uu MH EDS I9.2| 46 | — 11.26 675.65 | 20.0 | — 0.017 | 87 
И BN a сыа 17.6] 4 = 40.51 432.25 | 20.2-.| — 0.055 |. OI 
"ONE S dto 18.2| 53 | — 39.36 926.86 | 20.4 0.041 | 103 
fete Bon DES 17.9! 56 | — 67.04 | 1072.15 | 21.4 | — 0.062 | 110 
VI. SELECTION AND HEREDITY: CHARACTERISTICS OF DIF- 
FERENT PROGENIES AND VARIOUS LINES OF DESCENT DE- 
RIVED FROM A CROSS BETWEEN A WILD PLANT (4) AND 
PLANTS OF THE VARIETY BARBE DE CAPUCIN 
It would seem that the computed value for the first date of 
bloom (a) which is derived from a considerable amount of data 
obtained during the entire period ot growth is the most adequate 
single value obtainable that is sufficiently characteristic to serve 
as a basis for judgment of the effects of selection and of heredity. 
The value of the rate of change (b) сап also be used as a value for 
comparisons. 
I. GENERAL COMPARISON OF PROGENY WITH IMMEDIATE PARENTS 
AS TO VALUES OF а AND 5 
Whether flower number is directly inherited as such or in- 
directly inherited through its relation to types of vegetative habit 
of growth, some clue to the type or degree of heredity may be 
gained by the comparison of the performance of offspring with 
the values of the immediate parents. 
With the appearance of a few self-fertile plants in the Fi 
generation, it was possible to grow self-fertilized lines of descent 
of uniparental lineage and data from such lines admit of a com- 
parison of performance. On account of the self-sterility of a large 
number of the various progenies (about 50 per cent.), it was not 
possible to make extreme + and — selectioas. 
The Е, generation of the cross wild white-flowered X Barbe de 
