So, mari aku cerita sikit pasal 'SEED DORMANCY & PRE-TREATMENT'.
Dormancy.
What is dormancy? dormancy is a period of time where the growth or development, and the physical activity is suspended for temporarily. Contohnya haiwan yang mengalami hibernasi, pokok ru di musim dingin.
Talking about seed, a mature and live seed which not germinate when placed under the suitable condition is said to be dormant. So, how to make dormant seeds germinate? By doing pre-culture or pre-treatment to the seed.
The most common methods is by exposing the seeds to warmth or cold for a periods of time. We can place the seeds outdoors, mixed with moisture and aerated medium ( sand/compost medium).
Seed Pre-treatment.
Firstly, the seeds must be moist. Seeds that been stored for any length time need to be soak in water for 1-2 days. The functions is :
- Seeds will take up water
- Some germination inhibitors(penghalang) in seed coat are removed
The method in pre-treatment. There are 2 types of method.
Stratification method
- Seeds are mixed with a moisture and aeratated medium ( contain of coarse, sieved peat-alternative, coarse sand) in 50:50 ratio by volume. The mixture should be moist but no waterlogged to ensure that seeds remain the moistm, but the exchange of gases is not inhibited.
Hot Water treatment
- Before sowing,the seeds are placed in a heatproof container and 2 or 3 times their volume of boiling water is poured over them. Left in cooling for 24 hours and ready for sowing.
Huhuh sekian sajalah. Sleepy gila dah ni. QueenTido nak tido dulu. Harap2 boleh mimpi KingTido. Entah siapa la. Jangan si ojiejiejiejiejiejie sudah. Terlampau kacak tu.