Recently,a new
method has been published which promises to revolutionize agriculture in a way even morespectacularly than the green revolution of the 70’s in the previous centl】ry啦For want of a beRer term,I shall call itthe New Green Revolution.The theory is straightforward,and the method simple.Take any pure strain/breed,andcross it谢廿l another such,for both which we know the heritability of some strait,the heritability of this cross maythen be easily obtained from the Fl population,which for convenience we may call the crossheritability,xh。.Thiscrossheritability may be used to predict the genetic advance in the F2 generation,the gain depending on theselection intensity practised.Further,if we subtract this xh。which corresponds to the additive component of thecross from the broad crossheritability which corresponds to the sum of all genetic components,the remainder isthe heterotic power of F1,which is the heterosis divided by V(F1).Since each cross has a separate crossheritability,it also has a separate heterotic power.Thus crossbreeding is unified with purebreeding, and resort to anyalternative hypothesis,such as combining ability,superfluous.Thus the long—standing enigma of heterosis isresolved.From now on,crossbreeding may be handled as cleanly and freely as purebreeding.From the data of ourDrosopluTa experiments,it is seen that the value of crossheritability obtained is signally heightened by thecrossing; since the process is repetitive, if we cross tWO such single crossbreeds again to obtain a doublecrossbreed,the crosscrossheritability x2h2 will be f21rther lifted until x.h2 approximates unity when the process isindefinitely continued.Thus a mechanism is available for elevating crossheritability until the trait appears in allindividuals of the progeny population,when the trait becomes instinct and a new species is formed.Thus a newfield of Evolution Engineering is opened,and breeding is unified with evolution.For details on both the theoryand method,consult the paper of 2002 which is only the latest version of the operational theory proposed 1 5 yearsago②, but substantiated、Ⅳinl experimental data and reported again③.The time,labor and cost saved by thisprocedure should be obvious.The method could also be applied to reanalyze the mountain of data that hasaccumulatedonthe subjectduringthepastyears.①Wu Zhongxian(Wu J S),Li M D.Analysis of heterosis by a direct method using the concept of heritability.Genetica,2002,1 14:163-170咖u J S,Li M D.An operational genetic theory ofheterosis,with applications in animal and plant breedning.Proceedings ofthe 2ndWorld Conference ofQuantitative Genetics,1988.416,-4220Wu Zhongxian(Wu J S、.Analysis ofheterosis using a simplified modle based on the operational theory.Abstracts ofthe 18nd Inter-nailonal Congress ofGencries,1988.106新的绿色革命:揭示杂种优势之谜的秘密——遗传力(只需一代就可以进行分析)<英>@吴仲贤$中国农业大学!北京 100094<正> Recently, a new method has been published which promises to revolutionize agriculture in a way even more spectacularly than the green revolution of the 70's in the previous century①. For want of a better term, I shall call it the New Green Revolution. The theory is straightforward, and the method simple.Take any pure strain / breed, and cross it with another such, for both which we know the heritability of some strait, the heritability of this cross may then be easily obtained from the F1 population, which for convenience we may call the crossheritability, xh2. This crossheritability may be used to predict the genetic advance in the F2 generation, the gain depending on the selection intensity practised. Further, if we subtract this xh2 which corresponds to the additive component of the
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