Following are the activities in the development and release of a crop variety. Arrange the activities in chronological order i.e. from start to the last:
(A) Evaluation of the collected genotypes and selection of parental genotypes.
(B) Collection of diverse genotypes of the target crop.
(C) Pair-wise cross-hybridization of the parental genotypes followed by evaluation and selection of the superior recombinants.
(D) Testing, release, and commercializing the new variety.
Choose the correct answer from the options given below:
फसल किस्म के विकास और विमोचन (release) में निम्नलिखित गतिविधियाँ शामिल हैं। इन गतिविधियों को आरंभ से अंत तक कालानुक्रमिक क्रम में व्यवस्थित कीजिए:
(A) एकत्रित जीनोटाइपों का मूल्यांकन और जनक जीनोटाइपों का चयन।
(B) लक्षित फसल के विविध जीनोटाइपों का संकलन/संग्रहण।
(C) जनक जीनोटाइपों का युग्म-वार संकरण (cross-hybridization) और उसके बाद श्रेष्ठ पुनर्संयोजकों का मूल्यांकन एवं चयन।
(D) नई किस्म का परीक्षण, विमोचन और व्यावसायीकरण।
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए:
Sequential Steps in Crop Variety Development:
- Step 1 (B) - Collection of diverse germplasm: Assembling genetic variability (germplasm collection from wild relatives, landraces, and existing cultivars).
- Step 2 (A) - Evaluation and parental selection: Screening and evaluating collected accessions under target biotic/abiotic stress conditions to select elite parental lines.
- Step 3 (C) - Hybridization and selection: Performing planned cross-hybridization among selected parents, followed by pedigree/bulk selection across segregating generations ($F_2$ to $F_6$) to isolate superior homozygous recombinant lines.
- Step 4 (D) - Multi-location testing, release, and notification: Conducting multi-location station and AICRP trials, submission to the Central/State Variety Release Committee (CVRC/SVRC), notification, seed multiplication, and commercialization.
Therefore, the correct chronological sequence is (B), (A), (C), (D).
Correct Answer: Option 2.
विस्तृत व्याख्या:
Sequential Steps in Crop Variety Development (पादप प्रजनन एवं किस्म विकास के चरण):
- Step 1 (B) - Collection of diverse germplasm: Assembling genetic variability (germplasm collection from wild relatives, landraces, and existing cultivars).
- Step 2 (A) - Evaluation and parental selection: Screening and evaluating collected accessions under target biotic/abiotic stress conditions to select elite parental lines.
- Step 3 (C) - Hybridization and selection: Performing planned cross-hybridization among selected parents, followed by pedigree/bulk selection across segregating generations ($F_2$ to $F_6$) to isolate superior homozygous recombinant lines.
- Step 4 (D) - Multi-location testing, release, and notification: Conducting multi-location station and AICRP trials, submission to the Central/State Variety Release Committee (CVRC/SVRC), notification, seed multiplication, and commercialization.
Therefore, the correct chronological sequence is (B), (A), (C), (D).
Correct Answer: Option 2.
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