Search for drought stress tolerant rubber producing plant in China.

为寻找抗旱橡胶生产植物，对中国西部地区进行了调查。在陕西延安、西安、延陵、滑县等地对耐旱顺式橡胶生产植物‘Periplocas’的驯化面积进行了调查。中国观察到香附属植物4属。对产罗布麻科胶乳植物的新疆维吾尔自治区、塔克拉玛干、和田地区、尼夏回族自治区、银春、黄河中游等地罗布麻和罗布麻的驯化面积进行了调查。罗布麻和罗布麻统称为罗布麻，其晶格和韧皮纤维分别被用作粘合剂和纺织品。这些是极端干旱的地区，年降雨量不到100毫米。在卡什加尔、帕米尔高原和哈萨克斯坦观察到了一种橡胶蒲公英，它的根部积累了橡胶。上世纪60年代的S曾研究过它作为橡胶生产商的可能人选。然而，由于从蒲公英制取橡胶所必需的复杂程序，估计它的使用价值很低。这一次，发现了许多新的橡胶蒲公英品种。在干旱地区(年降雨量小于800 mm)的河南中国毛乌素沙漠(鄂尔多斯)，探索了杜仲实用化生产转胶的可能性。此外，还对香菇、杜仲和橡胶生产蘑菇进行了多项生物技术研究。

The western parts of China were surveyed for seeking of drought resistant rubber producing plants. A drought tolerant cis-rubber producing plant,‘Periplocas' were investigated for their habituation area in Yan'an, Xian, Yanling and Huaxian, Shaanxi China. Four genera of Periplocas plants have been observed in China. All of the seeds derived from collected Periploca Plants were identified to be Periploca sepium.The habituation area of Apocynum venetum and Poacynum hendersonii, latex rubber producing Apocynaceae plants, were investigated in Xinjan uygur autonomous region, Takla Makan, Hotan area of Pamir plateau, Nigxia Huizu autonomous region, Yinchun, Huang (center of Yellow river).Apocynum venetum and Poacynum hendersonii were collectively called to be ‘Lobuma', whose lattices and phloem fiber have been used as adhesion bond and textiles respectively. Those are extreme arid areas where small rainfall less than 100 mm per one year is observed.A rubber dandelion, ‘Taraxacum koksagbyz' that is accumulated rubber in its root was observed in Kaxgar, Pamir plateau and Kazakhstan. It has been investigated as a possible candidate of a rubber producer in 1960's. However a usage of rubber dandelion has been estimated to be low value because of a complicated procedure which are essential for rubber preparation from it. This time, many varieties of novel rubber dandelion have been found.A possibility of ‘Tochu', Eucommia ulmoides, for practical trans rubber production was investigated in Mu Us Shamo (Ordos) of Henan China, which is arid area (less than 800 mm rainfall per one year).In addition, several biotechnological studies have been performed for Periploca, Tochu, and rubber producing mushroom.