江西农业大学学报
江西農業大學學報
강서농업대학학보
ACTA AGRICULTURAE UNIVERSITATIS JIANGXIENSIS
2010年
1期
35-39
,共5页
刘韶焕%赵瑞%高凌娜%陈俊琴
劉韶煥%趙瑞%高凌娜%陳俊琴
류소환%조서%고릉나%진준금
水分%木质素%甜椒%老化苗
水分%木質素%甜椒%老化苗
수분%목질소%첨초%노화묘
water%lignin%pepper%ageing
为明确甜椒穴盘苗发生老化的基质含水量,并通过苗期的形态指标的变化来识别老化苗.在日光温室内,以甜椒王作为供试作物,50孔穴盘为供试穴盘,试验设定5个不同水分处理,分别为50%(T_1)、60%(T_2)、70%(T_3)、80%(T_4)、90%(T_5).2叶1心开始处理,6叶1心测定植株的形态指标和生理指标.不同水分处理可以改变植株体内木质素的含量,T_1、T_2、T_3、T_5木质素较T_4高,并且均达到差异显著性水平.MDA引起膜脂过氧化,造成甜椒穴盘苗老化.T_4的MDA含量较T_1、T_2、T_3、T_5分别降低了50.59%,47.06%,14.26%,9.31%.而T_4的净光合速率较T_1、T_2、T_3、T_5分别增高了58.85%,51.21%,41.84%,24.79%.T_4的壮苗指标均高于其它处理.基质供水量为80%Q时,辣椒穴盘苗抗老化能力最强,幼苗生长旺盛.
為明確甜椒穴盤苗髮生老化的基質含水量,併通過苗期的形態指標的變化來識彆老化苗.在日光溫室內,以甜椒王作為供試作物,50孔穴盤為供試穴盤,試驗設定5箇不同水分處理,分彆為50%(T_1)、60%(T_2)、70%(T_3)、80%(T_4)、90%(T_5).2葉1心開始處理,6葉1心測定植株的形態指標和生理指標.不同水分處理可以改變植株體內木質素的含量,T_1、T_2、T_3、T_5木質素較T_4高,併且均達到差異顯著性水平.MDA引起膜脂過氧化,造成甜椒穴盤苗老化.T_4的MDA含量較T_1、T_2、T_3、T_5分彆降低瞭50.59%,47.06%,14.26%,9.31%.而T_4的淨光閤速率較T_1、T_2、T_3、T_5分彆增高瞭58.85%,51.21%,41.84%,24.79%.T_4的壯苗指標均高于其它處理.基質供水量為80%Q時,辣椒穴盤苗抗老化能力最彊,幼苗生長旺盛.
위명학첨초혈반묘발생노화적기질함수량,병통과묘기적형태지표적변화래식별노화묘.재일광온실내,이첨초왕작위공시작물,50공혈반위공시혈반,시험설정5개불동수분처리,분별위50%(T_1)、60%(T_2)、70%(T_3)、80%(T_4)、90%(T_5).2협1심개시처리,6협1심측정식주적형태지표화생리지표.불동수분처리가이개변식주체내목질소적함량,T_1、T_2、T_3、T_5목질소교T_4고,병차균체도차이현저성수평.MDA인기막지과양화,조성첨초혈반묘노화.T_4적MDA함량교T_1、T_2、T_3、T_5분별강저료50.59%,47.06%,14.26%,9.31%.이T_4적정광합속솔교T_1、T_2、T_3、T_5분별증고료58.85%,51.21%,41.84%,24.79%.T_4적장묘지표균고우기타처리.기질공수량위80%Q시,랄초혈반묘항노화능력최강,유묘생장왕성.
This study was to make sure the stroma liquid water content in pepper seedling ageing,and to discern ageing seedlings by the changes in shape indexes.The experiment was carried out in the sunlight greenhouse. The experimental material was "Sweet Pepper" and the number of experimental holes was 50.The experiment designed five different water treatments.They were 50%(T_1),60%(T_2),70%(T_3),80%(T_4) and 90%(T_5),respectively.The treatmeats began at the stage of two leaves and one heart,and the shape indexes and physical indexed were surveyed at the stage of six leaves and one heart.Different water treatments changed the lignin content. In the different water treatments,the ageing of pepper seedlings started from the bottom of the stem.The lignin contents of T_1,T_2,T_3 and T_5 were higher than those of T_4 and the differences were significant.MDA caused plasma lemma peroxide thus bringing about pepper plug ageing. MDA content of T4 was lower than that of T_1,T_2,T_3 and T_5 by 50.59%,47.06%,14.26% and 9.31% respectively. But PIR was higher than that of T_1,T_2,T_3 and T_5 by 58.85%,51.21%,41.84% and 24.79% respectively. The strong seedling indexes of T_4 were obvious higher than in other treatments. When the supplying water was 80%Q,the pepper plug seedlings had a strong anti-ageing ability and the seedling grew very well.
