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45 Cards in this Set

  • Front
  • Back

list 4 ways for generalized tree improvement

- the selection cycle


- selection methods


-attibutes selected ( Genetic worth , Growth, Density, pest Resistance


- production methods

leader in tree breeding in BC

- forest genetics council of BC


-select seed ltd


- tree improvement branch ( tree seed centre, SPAR)


- research, innovation and knowledge management branch


- ARBORGEN *


- seed orchard managers

seed and vegetative material for reforestation of crown land is _________ ________ by legisltation in BC

Strongly controlled

Genetic material collected after April 1, 2005

Controlled by Chief Forestrs standard for seed use

Genetic material collected before April 1 2005

controlled by forest practices code of BC act



Forest practice code of BC act

- tree, cone, seed and vegetative material regulation


- timber harvesting and silv practice regulation sectoin 38


- seed and vegetative materail guidebook

although difference between Forest practice code of BC act and Chief foresters standards is not great. what can be of importance of the 2

where supplies of seed are limiting

section 8 of chief foresters standards describes 6 classes of genetic material

- natural stand


- untested parent material


- superior provencance


- tested parent trees


-custom lot ( phone tree breeder.


- non BC sources

rules governing use of seeds described in terms of

seed planting zones and transfer limits

SPZ

natural stand seed planting zone

BGC

Biogeoclimatic zone

SPAR

seed planting and registry system

genetic material used ____ __ _____ _____ specfied by regulationcan be used to reforest crown land

according to transfer limits

all genetic material used to reforest crown land must be ______________

Registered by the :

MINISTRY OF FORESTS and


STORED AT THE TREE SEED CENTRE




**********


seed coat

doramrancy?


stratification

Can GMO's be registered ?

NO

can collections from planation be registered?

NO

Can mixed be registered?

NO

each unique collection of genetic material is _____________

assigned a seedlot number or




vegetative lot number and transfer limits

natural stand collection must be from one ________, one ______ within an 8 km radius, and within __________ ________ _________

1. seed planting zone




2. Biogeoclimatic zone




3. prescribed elevation limits

minimal parents contribution is ____ trees for natural stands

10

genetic material must be used according to

regulations

______ must be kept where material is used and _________ to _________ ( with maps ) __________

1. records




2. reported




3. government




4. annually

best available genetic quality must ______

be used first

best available genetic material is the seedlot/ cutting lot listed on SPAR with what 4 attibutes?

1. highest genetic class and genetic worth




2. of preferred species to be planted ( listed as preferred in stocking standards)




3. meet transfer rules for use in a specified location




4. available surpluss ( SPAR code for 'on sale")

Genetic worth

is a ranking system for breeding attributes

what are the 3 parameters for genetic worth?

1. Growth




2. wood relative Densisty




3. pest Resistance

what is genetic worth expressed in

as a % increase compared to natural stand average

____ % of material used by a ______ in any year must comply with regulations.

1. 95%




2. Licensee

Penalty for non compliance of transfer limits

$5000


as well can include having to do site prep and replant

Seed planting zones SPZ are

areas which genetic material may be used

SPZ's are similar to _____ and strongly reflect ______________________________

- bec zones




- our understanding of ecosystem funtioning

what are the 2 types of SPZ's

1. for material from natural stands




2. from tested parent trees

What are some limiting factors for SPZ's

- elevation


- latitude


- longitude


- BEC zones

SPU

seed planning units ( planned area of use)

although SPZ and SPU are similar, what is a difference

SPU's may vary in extent because of confidence gained through testing

seed planning and registry system ( SPAR) is..

operational medium of communication about genetic material in BC

what are the 6 classes of genetic materials grouped in spar listed as in Genetic classes


( hint -- 3 letters)

B, B+ , A


seedlot info from SPAR :




- B


- TOD ( tompson okanogan dry)


- 1050m/850m/1550m


- 50 49 / 49 49 / 52 49


- 120 03/ 118 03/ 123 03


- IDF mw



- Genetic Class


- Seed planting zone


- use elevation mean/ min/ max


- use late mean/ min/ max


- use long mean/ min/ max


- BEC zone

ID soil characteristics




- dark brown ( 7.5YR 2.5/2)


-L-SL


- moderate, medium, granular,


- very friable


- 24% CF


- clear, wavy


- 6-45 cm


- 5.7



-munsell colour


-texture


- structure


- consistency


- coarse frag


- boundary


- thickness


- Ph

Identify 3 conventional stand density control treatments and at what approx what stand density do they occur.

1.Espacement - densisty control at regen


- Relative density = 0


- tree characteristic = none


2. Juvenile spacing/ pre comm thinning


RD = around 0.15 . almost always < .40


T C = between 100% LC and 50 % LC


= DIA < 15 cm


3. Commercial thinning


RD = > .40 and < .55 ( ZICM line)


T C = LC > or equal to 30 %





Identify 3 general self thinning patterns of fully stocked, even aged, single canopy layer stands. Indicate which patter stand density control is strongly reccomended

1. without much competition being experienced by dominent trees

Density control reccomended- seldom ( lose mark if yes)


2. dominent trees experience high levels of comp. but site remains fully occupied with reasonable vigorous crop trees


DC -- Possibly - seldom


3. crowns on all trees are greatly reduced during prolonged periods of very high comp levels and results in clumpy mortality // or repression, stagnation


DC -- YES ( lose mark if no ) **

dominent tree attributes vary greatly with stand density YES or NO




- size of juvenile core


- DIA


- height

- YES


- YES


-NO

list 5 simple, cost effective things that effect stand yield that can strongly be strongly influenced by silv management

-regen delay


- desired species


- desired genetics


- site occupancy


- veg. control


- merchantability limits


- full stocking

define or describe a fully stocked stand, what are units of stand measurment variable used to define a fully stocked stand?

- a range of stand densities that produce virtually the same volume


- defined with # trees / ha and mean tree volume m 3


- BA/ ha


- m3/ha/yr