张举军

摘要：在景泰县扬黄灌区对引进的7个加工型番茄品种进行了品种比较试验，结果表明：参试番茄品种以Zj-7丰产性最好，折合产量达到126 477.0 kg/hm2;单果重最重，为65.9 g;单株结果数最多，为67.2个;单株产量也最高，为4 428.5 g。同时该品种加工性能也较优良，果肉厚度为0.751 cm，可溶性固形物含量为5.76%，番茄红素含量为13.89 mg/100 g，单果耐压力为49.52 N;但Zj-7生育期长，达124 d，可作为加工型中熟番茄品种在景泰县种植。Zj-8折合产量较高，为117 409.5 kg/hm2，番茄紅素含量为14.16 mg/100 g;可溶性固形物和果肉厚度仅次于Zj-7，单果耐压力中上，生育期短，为106 d，可作为加工型早熟番茄品种在景泰县种植。

关键词：番茄;加工型品种;引种;景泰县

中图分类号：S641.2      文献标志码：A     文章编号：1001-1463（2020）05-0046-05

doi：10.3969/j.issn.1001-1463.2020.05.013

Influence of NaCl Stress on Seedlings Growth of Flax and Their Ion Absorption and Transport

ZHANG Yanping 1， ZHAO Wei 2， QI Yanni 2， XIE Yaping 2

（1. Institute of Biotechnology， Gansu Academy of Agricultural Science， Lanzhou Gansu 730070， China;2. Institute of Crops， Gansu Academy of Agricultural Sciences， Lanzhou Gansu 730070， China）

Abstract：To study the influence of NaCl stress on the growth and ions transport of flax seedlings， the absorption， distribution and accumulation of saline ions in seedlings of flax were analysed by water culture experiment. The results showed that the fresh and dry weight， the water and chlorophyll content of flax seedlings all increased slightly under NaCl（≤100 mmol/L） stress， and decreased with increasing concentration of NaCl. Whether above-ground or under-ground tissue of flax seedlings， the membrane permeability increased， but the contents of free proline and soluble protein all increased firstly and then decreased slowly with increasing NaCl concentration. The content of Na+ and Cl- in the roots， stems and leaves of flax seedlings all showed increasing trend with increasing NaCl concentration， the accumulation of Na+ and Cl- were in ascending order： stem， root， leaf， and leaf， stem， root， respectively. The loss of Ca2+ and K+ were in ascending order： leaf， stem， root， and stem， root， leaf， respectively. More Na+ were accumulated in leaves of flax seedlings under higher salt stress， which resulted in the more loss of K+ from leaves;the loss of Ca2+ started from roots， which could delay the loss from stem and leaves and then alleviate the salt damage.

Key words：Flax;NaCl stress;Seedlings growth;Ion absorption and transport

番茄是世界第二大蔬菜，也是设施栽培的主栽蔬菜[1 - 2 ]。我国番茄种植面积占全球35%，是世界上最大的番茄种植生产国 [3 ] 。加工型番茄是普通番茄的一种栽培类型[4 ]，原产自南美洲[5 ]，在番茄的生产和消费中占有重要地位[6 ]。随着快餐业的发展和人们生活水平的提高，番茄制品需求增长迅速 [7 ]，我国已成为继美国、意大利之后的世界第三大番茄制品生产国[8 ]。景泰县地处甘肃扬黄灌区，光热土地资源丰富，非常适宜加工型番茄的栽培种植，但受优良种质资源不足和新品种选育滞后等诸多因素的影响，生产中可供选择应用的优良品种不多，主栽品种产量下滑，加工品质参差不齐，综合抗逆性下降，严重制约了加工型番茄产业的可持续发展。因此，有针对性地引进观察选择应用高产优质品种，对推动加工型番茄产业发展壮大和区域经济发展具有重要意义。……