Composite and Synthetic Varieties
समिश्र व संश्लिष्ट किस्में (Composite and Synthetic Varieties):-
समिश्र किस्में (Composite Varieties):-
• परिभाषा (Definition):- जब एक से अधिक उत्कृष्ट अंत: प्रजातों का आपस में सभी संभव संयोजनों में संकरण कराकर समान मात्रा में बीजों को मिश्रित कर लिया जाता है तो इसे प्रकार बनी किस्म को समिश्र किस्म कहते हैं।
(When more than one superior inbreds are crossed in all possible combinations and equal amount of seeds are mixed together, it is called a composite variety.)
• उदाहरण (Example):-
Ø माना हमारे पास 4 उत्कृष्ट अंत:प्रजात हैं – 1, 2, 3, 4
(Suppose we have 4 superior inbreds - 1, 2, 3, 4)
Ø संकरण के 6 संभव संयोजन बनते हैं -
(6 possible combinations of hybridization are made -)
विकास की विधि (Method of Development):- 3 मुख्य चरण हैं:-
(There are 3 steps:-)
a. जनकों के लिए पुनरावर्तित उपज परीक्षण (Replicated Yield Trials for parents)
b. समिश्र किस्म का निर्माण (Development of composite variety)
c. गुणन व अनुरक्षण (Multiplication and Maintenance)
a. जनकों के लिए पुनरावर्तित उपज परीक्षण (Replicated Yield Trials for parents):-
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