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Triploid cassava for industry

机译：工业用三倍体木薯

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In India, Cassava (Manihot esculenta Crantz) is widely grown in the Southern States of Kerala, Tamil Nadu and Andhra Pradesh. The use of cassava varies greatly from direct human consumption to use in various industries. Moreover, cassava flour is a partial substitute for wheat flour. To exploit cassava as a better source of starch and other products for the pulp and paper industry, high starch varieties are being evolved. The Central Tuber Crops Research Institute (CTCRI) has achieved this goal to agreat extent through polyploidy breeding, especially triploidy. Triploid cassava was produced by crossing the normal diploids (2n = 36) with induced tetraploids (2n = 72). Induction of tetraploidy was achieved through colchicine treatment (0.5%, 12 hr).Even though tetraploids were not better than the respective diploids in economic characters, they were very useful as pollen parents for the production of triploids (2n = 54). Several combinations of diploid x tetraploid crosses were attempted of which the recovery of triploids was 96.1% in two crosses viz. OP4 (2x) X S.300 (4x) and OP-4(2x) X H.2304 (4x). The triploid progeny from the above two crosses was thoroughly evaluated.
机译：在印度，木薯（Manihot esculenta Crantz）在喀拉拉邦，泰米尔纳德邦和安得拉邦的南部州广泛种植。木薯的使用从人类直接消费到各种行业的使用都有很大差异。此外，木薯粉是小麦粉的部分替代品。为了将木薯用作纸浆和造纸工业中更好的淀粉和其他产品来源，正在开发高淀粉品种。中央块茎作物研究所（CTCRI）通过多倍体育种（尤其是三倍体）在很大程度上达到了这一目标。三倍体木薯是通过将正常的二倍体（2n = 36）与诱导的四倍体（2n = 72）杂交而产生的。四倍体的诱导是通过秋水仙碱处理（0.5％，12 hr）实现的，即使四倍体的经济性并不比相应的二倍体更好，但它们作为花粉亲本在生产三倍体方面还是非常有用的（2n = 54）。尝试了二倍体x四倍体杂交的几种组合，其中两次杂交中三倍体的回收率为96.1％。 OP4（2x）X S.300（4x）和OP-4（2x）X H.2304（4x）。彻底评估了来自上述两个杂交的三倍体后代。

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