I have done hybrid Seed Production of Sunflower during my “HoT” program in 8th semester.
Since I have experience in hybrid Seed Production of Sunflower, I selected this topic.
Scientific Name :- Helianthus annus
Family :- Asteraceae
Chromosome No. :- 17
– Sunflower is a common oil seed of India.
– It is a cross-pollinated crop, Insects (Honeybee) are the pollinating agents.
– The crop has got two types of flowers, viz ray & disc florets. Seeds set in disc florets which are bisexual but exhibit self incompatibility due to protoandrous nature of the flower.
– Flower opening starts from outer whorl and proceeds towards centre of the head. The head bloom within 5 -10 days. The pollen grains are viable for 12hrs. Anthesis take place at 5-8am.
– Self incompatibility operates leading to cross pollination.
– In sunflower, Hybrids are produced by employing Cytoplasmic genetic male sterility.
– Seeds are produced by transferring pollen of male parent to the female parent.
– The male and female parents are rised in 1:4 ratio.
– Isolation distance for foundation seed is 600m & certificated seed is 400m.
– Sowing should be done by preparing ridges & furrows.
– Seed rate is 1kg of female parent & 350gm of male parent.
– Manures & Fertilizers is FYM – 1 Tractor load.
– Supplementary pollination – As in hybrids, the pollen should be collected from the male parent, then collected pollen should be transferred to the female parent by using camel brush.
– Roughing operations should be done properly, to avoid contamination of seeds and also to maintain seed quality. This operation should be done before flowering.
– The harvesting, should be done when the flower head attained Physiological maturity – The change of head colour from green to lemon Yellow.
– The head should be harvested separately first in male & then in female, to avoid contamination and mechanical admixture.
– Seed standards – Physical purity in foundation seeds – 98% & Certificated seed – 98%
Germination % in foundation seed – 60%
& Certificated seed – 60%.
– Threshing & Drying should be done by drying the earheads under sun and then thesh with fliable stick for extractions of seeds.
– The moisture content should be 15-18% while threshing.
– The seed should be dried upto 8-10% moisture content under sun for long term storage.
– Seed packing should be done in HDPE gunny bags for long term storage.
– The seeds can be stored upto 2yrs if the seeds are placked in moisture container & are stored at low temperature.
– The Godown should be kept clean as the possibility of Secondary infestation.

Sai Charan Katta

By Sai Charan Katta

My Name is Katta. Sai Charan. I'm passionate about Experimenting new things & Communication. I'm currently interested in jobs related to seed production.

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