slides for steve oct 2008

1

Chemistry

Traits Seeds

Roundup Ready&

Insect resistant crops

Integrated channel&

Technology Transfer

R & Dengine

2

What is plant breeding?

The Art, Science And Business Of Plant Improvement

Doing KnowingValue

JudgementSelling

3

Breeding Goals

Adapted to all climatic conditions.

Good stable yields.

110RM to 135RM range.

Good quality grain.

Prolificacy for areas that plant lower plant densities.

Disease tolerance.

Good standability for irrigation.

4

Two inbred lines are crossed to produce a hybrid.

Line A Line B

A x B Hybrid

5

Line A Line B

A x B Hybrid

6

Subtropical

Tropical

Subtropical

Temperate

lTemperate

Germplasm exchange (1.1 million to date)

7

Donor Inbred to convertrrRR F1 BC1 BC7

BCnF1BCnF2

Screen for zygosity

Same inbred with added gene - Homozygous

BCnF3

Screen for zygosity

Screen for APand gene presence

Trait Integration

8

Efficacy – MON810

Non BtBt

9

Corn Root Worm gene

10

Plant populations in South Africa

Headcount = 6 (Only TI)

12 000 – 20 000 plants/haRow width = 2.1m

35 000 – 45 000 plants/haRow width = 0.91m

20 000 – 35 000 plants/haRow width = 1.5m

11

Specialized Equipment

1.5 m