ผลของการเก็บรักษาเมล็ดพันธุ์แบบปิดสนิทใน Super Bag ต่อคุณภาพเมล็ดพันธุ์ข้าว

Abstract

Hermetic seed storage in super bag provided by IRRI prevents oxygen and moisture movement between the outside atmosphere and the seed. Two experiments were conducted to investigate the effect of hermetic storage in IRRI super bag on rice seed quality. In a preliminary experiment, rice seed variety Khao Dawk Mali 105 (KDML105) was stored either in plastic seed bags at 12% moisture content (MC) or in super bags at 10% MC, at Prachinburi Rice Research Center warehouse (PCR). The result showed that germination of seed stored in plastic seed bags was less than 80% after 6 months whereas germination of seed stored in super bags was 93%. There was still 92 % germination of seed stored in super bags after 24 months storage. In another experiment, a split plot in RCB design was used whereby 12% seed moisture content of Pathum Thani 1 (PTT1) was stored, with or without chemical treatment (mancozeb+carbendazim +cholopyriphos) in plastic bags, plastic bags+ super bags, or in jute bags, at Chonburi Rice Seed Center warehouse (CBR) for 12 months. The result revealed that germination of 12% seed moisture content was less than 80% after 9 months storage except for those stored after chemical treatment in plastic bags+super bags (89%). Germination of 10% seed moisture content stored in plastic bags+super bags with or without chemical treatment was 91 or 94%, respectively, after 12 months storage. Moreover, no insects were detected in these three super bag treatments. Hence, hermetic storage can be used to maintain the viability of rice seed reserves against future disasters and to extend the longevity of rice germplasm without storage at low temperature.