CAJ | 학술논문

以人工气候室鉴定的孕穗期耐冷性不同的10个水稻品种为材料,采用扫描电子显微镜观测其剑叶的气孔密度、气孔大小和单位面积气孔周长等性状特点,以探讨水稻剑叶气孔性状与孕穗期耐冷性的关系.结果表明:耐冷性强品种'培杂软香'、'天优688'、'冈优825' 的气孔密度和单位叶面积气孔总周长较小,分别为380～410个/mm2和29.8～32.6 cm;耐冷性弱的品种'粤杂763'气孔密度和单位叶面积气孔总周长较大,分别为618个/mm~2和46.9 cm; 耐冷性中等的品种'培杂泰丰'等介于二者之间,分别为460～510个/mm~2和35.1～39.3 cm.气孔密度相近时,气孔较大的品种耐冷性较弱;单位叶面积气孔总周长相近时,气孔密度大的品种耐冷性较弱.研究发现,水稻品种剑叶的气孔密度和单位叶面积气孔总周长与其孕穗期耐冷性均呈极显著正相关,可以作为水稻孕穗期耐冷性的鉴定指标.
이인공기후실감정적잉수기내랭성불동적10개수도품충위재료,채용소묘전자현미경관측기검협적기공밀도、기공대소화단위면적기공주장등성상특점,이탐토수도검협기공성상여잉수기내랭성적관계.결과표명:내랭성강품충'배잡연향'、'천우688'、'강우825' 적기공밀도화단위협면적기공총주장교소,분별위380～410개/mm2화29.8～32.6 cm;내랭성약적품충'월잡763'기공밀도화단위협면적기공총주장교대,분별위618개/mm~2화46.9 cm; 내랭성중등적품충'배잡태봉'등개우이자지간,분별위460～510개/mm~2화35.1～39.3 cm.기공밀도상근시,기공교대적품충내랭성교약;단위협면적기공총주장상근시,기공밀도대적품충내랭성교약.연구발현,수도품충검협적기공밀도화단위협면적기공총주장여기잉수기내랭성균정겁현저정상관,가이작위수도잉수기내랭성적감정지표.
The flag leaf stomatal traits of ten rice cultivars with different cold tolerance,which were examined by artificial climate chamber,were studied by using scanning-electron microscope.The results showed that the cold tolerant cultivar,such as 'Peiza ruangxiang','Tianyou 688',and 'Gangyou 825' had a low stomatal density, 380～410 stoma per mm~2,the cold susceptible cultivar 'Yueza 763' had a high stomatal density,618 stoma per mm~2,and moderate cold tolerant cultivars had a moderate stomatal density,460～510 stoma per mm~2.When the stomatal density was similar,the rice cultivar with big stoma had the low cold tolerance level. The cold tolerant cultivar,such as 'Peiza ruangxiang', 'Tianyou 688', and 'Gangyou 825' had a short total stomatal circumference,29.8～32.6 cm per unit leaf area,the cold susceptible per unitvar 'Yueguangsimiao' had a long total stomatal circumference,46.9 cm per unit leaf area.When the total stomatal circumference per unit leaf area was similar,the rice cultivar with high stomatal density had the low cold tolerance level.The rice cultivar cold tolerance during the booting stage was significantly positively correlated with its flag leaf stomatal density and total stomatal circumference per unit leaf area.