plsc 2

Question 1

infloresscence types of poaceae

Answer 1

spike, panicle and spike-like panicle.

Question 2

Spike Inflorescence

Answer 2

• An elongate inflorescence with sessile spikelet attachment (i.e. the spikelets are attached directly rachis and arranged distichously).
• The rachis is the central stalk running through the inflorescence and is attached at its base to the peduncle.

Question 3

Panicle Inflorescence

Answer 3

• In a panicle inflorescence, branches emerge from the central rachis, and spikelets are attached to these branches by means of small stalks called pedicels.
• There are two series of branches that make up a panicle, main branches from the rachis, and secondary smaller branches (pedicels) joining these primary branches to the spikelets

Question 4

Spike-like Panicle

Answer 4

• A panicle that looks like it’s a spike because the primary and secondary branches are so short that they are only observable upon very close inspection.

Question 5

Inflorescences in the grass family are composed of individual units called spikelets. A spikelet consists of two ___ enclosing one or more ____.

Answer 5

glumes:o Glumes are bracts, which enclose the spikelet.
 Glumes may be large and papery as in oats, or very small and relatively inconspicuous as in barley.
florets:

Question 6

• Within the pair of glumes we find at least one, but possibly many _____ (small flowers) depending on the species of grass.

Answer 6

florets

Question 7

o The main access of a spikelet bearing the florets is called a _____.

Answer 7

rachilla

Question 8

whats the two bracts florets have

Answer 8

lemma and the palea
 If the lemma and palea remain around the ripened grain produced by this flower, they form the hull as in hulled barley and oat.
* The lemma is usually the larger or lower one

Question 9

o The_____, the main female part of the cereal flower, occupies most of the space enclosed within the lemma and palea.

Answer 9

ovary

Question 10

o The______ of the cereal floret emerge from between the lemma and palea.

Answer 10

stamens

Question 11

• Inside the ovary is a single embryonic seed called an _____

Answer 11

ovule.

Question 12

whats the name for bread wheat

Answer 12

Triticum aestivum

Question 13

whats the name for winter wheat

Answer 13

Triticum aestivum

Question 14

whast the name for durum

Answer 14

Triticum durum

Question 15

The inflorescence of bread wheat is a______

Answer 15

spike

Question 16

bread wheat has _____ max florets

Answer 16

5

Question 17

winter wheat has _____ max florets

Answer 17

6

Question 18

Most wheat varieties have a stem in the internode sections of the culm. However, varieties bred for resistance to sawfly will have culms filled with pith.

Answer 18

hollow

Question 19

rye inflorescence is a

Answer 19

spike

Question 20

whats triticale made from

Answer 20

combo of durum and rye

Question 21

whats the name for triticale

Answer 21

X Triticosecale Wittmark

Question 22

whats the name for rye

Answer 22

Secale cereale

Question 23

triticale resembles what more

Answer 23

wheat(durum)

Question 24

t/f triticale has higher levels of protein than wheat

Answer 24

tr

Question 25

whats triticale mostly used for

Answer 25

grain or forage

Question 26

Barley has a inflorescence

Answer 26

spike

Question 27

how many spiklets does barley have

Answer 27

3

Question 28

what are the 2 types of barley

Answer 28

six-row(big with little seeds)
2 row(same size with all seeds)

Question 29

name for barley

Answer 29

Hordeum vulgare

Question 30

name for oats

Answer 30

Avena sativa

Question 31

inflorescence type for oats

Answer 31

panicle

Question 32

how many florets does oats have

Answer 32

3

Question 33

what are the characteristics for wild oats

Answer 33

dark and hairy

Question 34

whats the name for wild oats

Answer 34

Avena fatua

Question 35

whast the name for canaryseed

Answer 35

Phalaris canariensis

Question 36

whast the inflorescence type for canaryseed

Answer 36

semi like panicle

Question 37

canaryseeds are what

Answer 37

shiny

Question 38

Orient the plant so the odd numbered leaves are on the ______side of the plant and the even
numbered leaves are on the ______side of the plant.

Answer 38

left
right

Question 39

Leaves have alternate and distichous arrangement and arise on_____ sides of the main shoot or
stem (orient odd on the left and even on the right)

Answer 39

opposite

Question 40

_____ are lateral branches formed from axillary buds located at each crown node and at the
coleoptilar node

Answer 40

Tillers

Question 41

Count the tillers by locating the _______, the sheath that encloses the tiller bas

Answer 41

prophyll

Question 42

Stem elongation or jointing occurs as a result of _______ _______

Answer 42

internode elongation

Question 43

The flowering stem or________ is formed from the elongation of terminal internodes

Answer 43

culm

Question 44

Internodes increase in length from the base of the culm to the uppermost internode, which is known as
the_______

Answer 44

peduncle

Question 45

T/F Relative maturity is measured from seeding to physiological maturity.

Answer 45

T

Question 46

T/F VB stands for variable blend

Answer 46

F

Question 47

T/F CWSWS is the only wheat class/category that does not have VB varieties available

Answer 47

F

Question 48

T/F 6 row barley is generally more prone to shattering then 2 row barley

Answer 48

T

Question 49

Which form of net blotch is more prevalent in Saskatchewan?

Answer 49

netted