商品描述

二氫茉莉酸丙酯（PDJ）是一種人工合成的植物生長調(diào)節(jié)劑，與維管束植物中普遍存在的天然植物調(diào)節(jié)劑茉莉酸（JA）的結(jié)構(gòu)相似，具有相同功能和相似的作用模式，對(duì)環(huán)境低毒。該物質(zhì)在植物表面和體內(nèi)以緩釋方式產(chǎn)生茉莉酸分子并具有極強(qiáng)的誘導(dǎo)抗逆和增產(chǎn)作用。PDJ還可以促進(jìn)蘋果、葡萄等果實(shí)著色及提早成熟。PDJ具有以下生理效應(yīng)：①0.01-0.1mg/LPDJ浸種對(duì)發(fā)根，幼苗生長表現(xiàn)出促進(jìn)效果，但大于0.1mg/L表現(xiàn)抑制；②促進(jìn)苗期生長，增強(qiáng)抗逆性；③促進(jìn)幼果脫落；④促進(jìn)果實(shí)成熟。

關(guān)于PDJ應(yīng)用的科學(xué)研究如下：

（1）研究不同濃度二氫茉莉酸丙酯（PDJ）、茉莉酸甲酯（MeJA）對(duì)葡萄果實(shí)著色及品質(zhì)的影響，實(shí)驗(yàn)結(jié)果表明：PDJ、MeJA處理能夠顯著提高果皮中花色苷含量，降低葉綠素a、b含量，改善果實(shí)色澤；PDJ、MeJA處理能夠顯著提高果實(shí)可溶性固形物、維生素C含量，促進(jìn)果皮中總酚、類黃酮的積累，改善果實(shí)品質(zhì)。

（2）The effects of the application of the jasmonic acid (JA) derivative n-propyl dihydrojasmonate (PDJ) on lesion diameter,endogenous abscisic acid (ABA), phaseic acid (PA), JA, aroma volatiles, and antioxidant activity showed that  PDJ applicationdecreased the Lesion diameters. PDJ application before inoculation increased ABA and PA concentrations, and the synergistic effectof JA and ABA may play a role in the defense mechanism against pathogen infection in grape berries. In addition, PDJ applicationgenerally increased the production of aldehydes, esters, and terpenes. These volatiles may also be associated with resistance topathogen infection.