HYBRIDIZATION TECHNIQUE IN COCONUT - D*T Polination

HYBRIDIZATION  TECHNIQUE IN COCONUT

Classified into two varieties

Talls: Var. Typica  : Commonly cultivated ones

§Grows to 20-30m height

§Flowering in 6-10 years

§Productive life:Long lived upto 80-100 years.

§Common Talls:WCT,ECT, WAT,Panama Tall

§*I^st 15 years - 24 feet and afterwards 1 ft / year.

Dwarfs: Var. Nana

§Flowers at 4-5 years

§Short stature 8-10 m at 20 years of age

§Productive life upto 50 years

§Needs more care and attention.

                                            

§Common dwarfs:Chowghat Green Dwarf,COD, Gangabondam

Talls

Talls :Var. Typica  : Commonly cultivated ones

§Grows to 20-30m height

§

§Flowering in 6-10 years

§

§Productive life:Long lived upto 80-100 years.

§

§Common Talls:WCT,ECT, WAT,Panama Tall

§

§*I^st 15 years - 24 feet and afterwards 1 ft / year.

Healthy palm in midst of diseased palms

Healthy crown of WCT palm 

Dwarfs

Dwarfs: Var. Nana

§Flowers at 4-5 years

§Short stature 8-10 m at 20 years of age

§Productive life upto 50 years

§Needs more care and attention.

§Common dwarfs:Chowghat Green Dwarf,COD,        Gangabondam

CGD Mother palm

                   

                                          Chavakkad Orange Dwarf

Breeding technique

Long drawn, Slow and difficult process.

Ø  Its long juvenile phase before flowering

Ø  Heterozygous nature of the crop

Ø  Lack of pure inbreds

Ø  Lack of reproducible asexual method of rapid

    multiplication.

Breeding system

•          Generally cross pollinated

•          Talls are cross pollinated

•          No over lapping of phases

•          Dwarfs are self pollinated

•          Overlapping of male and female phases

•          Talls are heterogeneous and dwarfs homogenous

Floral biology

•          Inflorescence : Spadix

•          Male flowers 30-35 spikelets

•          200-300 male flowers/spikelet

•          8000-10,000 male flowers/infl.

•          Female flowers

•          Known as buttons

•          30-40/ infloresence

Floral Biology

                                                       WCT                  CGD

                                       Male phase _     1st to 21 st  day                  1st - 7 th Day        

                                                    Interval (Gap) -   3 days                                    0

                                                                      Female phase     -  25th - 30th days                      3rd - 12 th days

                                                                                                                                                                (overlapping)

                                                         * Days after opening of the inflorescence

HYBRIDISATION TECHNIQUE

•         SELECTION OF MALE AND FEMALE PALMS

•         NUMBERING OF SELECTED PALMS

•         WATCH THE DATE OF INFLORESCENCE OPENING AND RECORD

•         EMASCULATION

•         BAGGING OF EMASCULATED INFLORESCENCE

•         POLLEN COLLECTION FROM SELECTED MALE PALM