Journal o f Agricultural Research 
Vol. XXIX, No. 10 
m 
Table I. —Showing data for the species and varieties of cuttings which formed 
either roots or a callus a —Continued 
Species and varieties 
Source 
Cutting 
No. 
Leaves 
Shoots 
Callus 
Roots 
No 
growth 
Pyrus communis —Continued. 
Dnyfinnfi d’AlenQon 
Davis.. .. 
20-31 
9 
5 
Easter Beurre 
...do_ 
4-48 
10 
10 
Flemish Beauty. - _ 
...do _ 
20-48 
10 
4 
Forelle _ _- 
...do_ 
20-35 
9 
3 
Giffard . _ . _ 
...do_ 
20-13 
10 
5 
Glou Morceau .. __ 
...do_ 
20-28 
10 
10 
Hardy....... 
...do_ 
20-19 
10 
7 
Do 
...do_ 
20-40 
10 
4 
Howell _ _ _ 
Chico_ 
4 
4 
Fox___ __ 
Davis_ 
20-52 
8 
5 
KiefTer.. ___ 
...do_ 
20- 4 
10 
8 
Lawson (Comet ) . . _ 
do 
20-25 
9 
8 
P. Barry 
_. do_ 
20-41 
10 
6 
Seckel _ .. _ 
_ do _ 
20-37 
10 
3 
Summer Doyenne__ 
...do_ 
20- 1 
10 
4 
Surprise . _ _ 
Chico . 
SPI 45901 
2 
2 
Winter Nelis. _ _ ___ 
Davis_ 
5-50 
10 
5 
Do___ 
. ..do_ 
20- 9 
10 
6 
Pyrus nivalis 
Chico 
SPI 27670 
3 
1 
Pyrus phaeocarpa ___ __ 
do _ 
SPI 39540 
2 
2 
2 
Pyrus salicifolia __ _ . __ 
...do_ 
SPI 26680 
3 
3 
Pyrus serotina _ ..._ 
...do__ 
SPI 30329 
5 
5 
Do___ 
do _ 
SPI 30352 
5 
5 
Do_ 
. .do_ 
SPI 30360 
4 
4 
Do____ 
_ .do_ 
SPI 30361 
4 
2 
Do___ 
...do_ . 
SPI 38241 
4 
4 
Do_ 
.. do_ 
SPI 38242 
3 
3 
Do_ 
...do_ _ 
SPI 38264 
2 
1 
1 
Do_ 
. do_ 
SPI 38271 
5 
1 
P. serotina X P. communis _ ... . ... 
...do_ . 
SPI 43442 
3 
3 
Do_ 
do. ... _ 
SPI 43443 
5 
3 
Do___ 
...do__ 
SPI 43444 
4 
4 
Do_ _ 
. .do. _ 
SPI 43562 
* 4 
4 
P.serotina (probably Golden Russet) X P. 
communis. 
Pyrus ussuriensis _ ..._ 
...do_ 
SPI 55805 
4 
4 
...do_ 
SPI 40019 
6 
6 
Do..___ 
do_ 
SPI 44151 
3 
3 
Do_ 
do__ 
SPI 44150 
• 5 
5 
Pyrus sp. (Flowering crab)_ _ 
...do_ 
SPI 22434 
3 
3 
Pyrus sp. (Muzalma)_ _ 
. do_ 
SPI 30326 
5 
4 
Do____ 
...do_ 
SPI 30326 
5 
2 
Do___ 
.. do_ 
SPI 30353 
11 
11 
Pyrus sp_ 
...do_ 
SPI 30635 
5 
2 
DoT_ _ ___ 
do _ 
SPI 30327 
9 
4 
Do_ 
. do...... 
SPI 40207 
6 
6 
P. baccata X P. malus ___ 
do_ 
SPI 28489 
6 
3 
Do_ 
...do_ 
SPI 28489 
4 
1 
Pyrus malus _ 
do_ 
SPI 27152 
4 
1 
Do_ 
.. do_ 
SPI 27153 
8 
8 
Do_ 
do_ 
SPI 35636 
3 
1 
Do___ 
...do_ 
SPI 39829 
3 
2 
Do_ 
. do_ 
SPI 43154 
2 
1 
Do_ 
_ do_ 
SPI 43155 
3 
1 
Do_ 
do_ 
SPI 43157 
17 
9 
Do_ 
...do_ 
SPI 43164 
3 
1 
Do_ 
do _ 
SPI 43168 
3 
2 
Do_ . 
do 
SPI 43171 
1 
1 
Do_ 
...do_ 
SPI 43173 
3 
2 
Pyrus malus: 
Chenango. _ 
Davis_ 
8-44 
10 
10 
Cliff__ 
Chico_ 
SPI 43153 
4 
4 
Diadem_ 
...do_ 
SPI 43157 
4 
1 
Early Harvest___ 
Davis. 
7-45 
10 
10 
Gen. Carrington_ _ 
Chico_ 
SPI 43159 
3 
1 
Gravenstein.. ... _ 
Davis_ 
5-45 
10 
1 
7 
John Sharp_ _ 
Chico_ 
SPI 43162 
4 
2 
Keswick..*.__ __ 
Davis_ 
4-45 
10 
6 
Maiden Blush_ _ 
_. do_ 
8-44 
10 
8 
Red Astrachan_ 
..do_ 
2-44 
10 
10 
Red June___. .. 
!.. do_ 
9-45 
10 
1 
Red Spy_ _ 
I Chico_ 
SPI 43169 
4 
2 
Summer Pearmain__ _ 
| Davis_ 
10-45 
10 
1 
7 
White Astrachan_ _ 
1 do _ 
1-48 
10 
10 
. Willie Sharp_ 
Chico_ 
SPI 43174 
3 
3 
Yellow Transparent.._ __ 
! Davis_ 
2-50 
10 
3 
Pyrus pulcherrima (P. floribunda) _ r ._ 
Pyrus sieboldi arborescens _ 
1 Chico... . 
PIG 16625 
7 
7 
L-.do. _ 
ISPI 43704 
5 
3 L 
Pyrus zumi __ 
L do _ 
jSPI 43705 
1 6 
6 
3 
1 - 
1 u 
° SPI refers to Seed and Plant Introduction numbers; PIG to Plant Introduction Garden numbers; 
and PLH to Plant Life History numbers. 
