VARIETAL NAME: 'P 19'

Taxonomical and basic information

Varietal name:
'P 19'
Identification/ Accession n.:
13
Ingroup:
Morus indica s.l.
Species:
Morus indica
Origin:
Bulgaria
Obtained:
1963

Morphological characteristics

Trunk:
Trunk circumference (cm):
46
Trunk colour:
Light brownish-grey
Shoots:
Colour of one-year old shoot:
Medium brown
Lenticel density:
Medium
Lenticel shape:
Round
Buds:
Bud shape:
Medium triangular
Bud colour:
Greyish brown
Bud size:
large
Leaves:
Phyllotaxis:
Opposite decussate
Leaf shape:
Simple
Average leaf size: length (cm):
26.16
Average leaf size: width (cm)
20.24
Leaf size ratio:
Low (<1.2 broad leaves)
Petiole size (cm):
4.42
Petiole range:
Long (41-70 mm)
Shape of leaf base:
Cordate
Shape of leaf apex:
Acute
Leaf blade tip:
Caudate
Leaf blade margin:
Biserrate
Hairiness:
Glabrous
Glossiness:
Glossy

Reproductive structures

Sexual dimorphisem:
Dioecious
Inflorescence type:
male, female and polygamous
Inflorescence size:
Female infl. length (mm):
6.0
Female infl. diameter (mm):
5.0
Female infl. stalk length (mm):
7.0
Male infl. length (mm):
17.0
Male infl. diameter (mm):
9.0
Male infl. stalk length (mm):
13.0
Polygamous infl. length (mm):
Polygamous infl. diameter (mm):
Polyg. infl. stalk length (mm):
Infructescence:
Fruit weight (g):
0.725
Infructescence length (mm):
19.8
Infructescence width (mm):
10.8
Length of peduncle:
Short
Infructescence colour:
Reddish black
Taste:
Balanced
Infructescence shape:
Cylindrical

Phenological descriptors

Date of bud burst (week):
13
Flowering date (week):
15
Date of infructescence ripening (week):
Medium to late
Uniformity of infructescence ripening:
Medium to late
Abundant autumn colouring (week):

Growth and yield attributes

Vigour:
Lenght (cm):
115.5
Number of lateral shoots:
17
Lenght of internode (cm):
6.7
Leaf No./meter:
Weight of 100 fresh leaves (g):